Battery-Capacitor Power Buffering for Stable Radio Data Transmission
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Solution Overview
Problem
Battery-operated multifunctional units with lithium-ion batteries face reduced lifespan due to high power peaks, which cause battery voltage loss and shorten the battery's term.
Innovation Solution
A battery-operated multifunctional unit with a parallel connection of a lithium-ion battery and an EDLC capacitor, where the capacitor acts as a buffer for high power peaks, reducing the current load on the battery and maintaining voltage during data transmission cycles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a lithium-ion battery is used to power a multifunctional unit with radio transmission, then the unit can operate autonomously for extended periods, but high current peaks during data transmission cause voltage loss and reduce battery service life
Solution Approach 1:
The power supply system is segmented into two functional components: a lithium-ion battery for energy storage and an EDLC capacitor for power buffering. This segmentation allows each component to perform its specialized function - the battery provides sustained energy while the capacitor handles transient current peaks, resolving the contradiction between service life and voltage stability.
Solution Approach 2:
The EDLC capacitor acts as an intermediary between the battery and the radio module. It absorbs current peaks during transmission and supplies power during high-demand periods, protecting the battery from direct exposure to damaging current pulses while maintaining stable voltage output.
2Productivity
If high current peaks are drawn from the battery during GPRS data transmission, then data can be transmitted successfully, but the battery experiences significant voltage drop and reduced lifespan
Solution Approach 1:
The EDLC capacitor is pre-charged during low-current periods and is ready to immediately supply current during transmission peaks. This beforehand cushioning prevents the battery from experiencing sudden current demands, allowing reliable data transmission while preserving battery longevity.
Solution Approach 2:
The system changes the electrical parameters delivered to the radio module by introducing the capacitor, which transforms the current profile from high-peak pulsed draws to a more stable, buffered supply. This parameter transformation enables maintaining transmission productivity while reducing the stress parameters on the battery.
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 significantly reduces battery current load and voltage loss during high power peaks, extending the battery's lifespan and maintaining stable voltage during data transmission, especially in mobile networks.
Implementation Method 1
a capacitor (10) connected in parallel to the battery terminal (2.2), wherein by means of the capacitor current can be provided from the capacitor (10) for the multifunctional module (2.3) in time periods with a high current draw by the multifunctional module (2.3) and current can be transferred from the battery (9) to the capacitor (10) in time periods with a low current draw by the multifunctional module (2.3)
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a battery-operated multifunction unit (1) - with a battery connection (2.2) provided for connecting a battery (9), - with a capacitor (10) which is connected in parallel to the battery connection (2.2), - with a radio module (2.1) and - with a multifunction module (2.3) which has at least one data collection and/or storage unit (2.4), and is connected in parallel to the battery (9) and the capacitor (10), wherein, by means of the capacitor (10), current can be supplied from the capacitor (10) to the multifunction module (2.3) during periods of high current draw by the multifunction module (2.3) and current can be transferred from the battery (9) to the capacitor (10) during periods of low current draw by the multifunction module (2.3).