Transformer Relay Battery Voltage Measurement System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery voltage measurement systems face challenges in miniaturization and lifespan due to the use of photo-MOS relays, which are limited by the short lifespan of internal LEDs and difficulty in reducing size.
Innovation Solution
A transformer relay system that transforms voltage measurement signals using a transformer and a metal oxide silicon field effect transistor (MOSFET) relay to measure battery voltage, allowing for continuous measurement without lifespan limits and maintaining high-voltage insulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a photo-MOS relay is used to measure battery voltage, then the voltage measurement function is achieved, but the lifespan is short due to the internal LED
Solution Approach 1:
The patent replaces the photo-MOS relay (which uses an internal LED that degrades over time) with a transformer relay that uses electromagnetic induction. The transformer relay includes a transformer with primary and secondary windings, where the control signal activates a relay switch to connect the battery voltage to the measurement unit. This substitution eliminates the short-lived LED component while achieving the same voltage measurement control function, thereby significantly improving reliability and lifespan.
2Volume of moving object
If a photo-MOS relay is used to measure battery voltage, then the voltage measurement function is achieved, but miniaturization is difficult
Solution Approach 1:
The patent replaces the photo-MOS relay structure with a transformer relay structure. The transformer relay comprises a transformer with primary and secondary windings, a relay switch connected to the primary winding, and a measurement unit connected to the secondary winding. This substitution enables more compact integration and easier miniaturization compared to the photo-MOS relay, while maintaining the voltage measurement control function.
3Measurement precision
If voltage measurement is performed frequently to monitor battery characteristics, then measurement accuracy is improved, but the photo-MOS relay lifespan is reduced
Solution Approach 1:
The patent replaces the photo-MOS relay with a transformer relay that has no internal LED component subject to degradation from frequent activation. The transformer relay uses electromagnetic induction through primary and secondary windings, allowing frequent voltage measurements to be performed without reducing component lifespan. This enables continuous battery monitoring with high measurement accuracy while maintaining long-term reliability.
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 transformer relay system enables reliable, long-term battery voltage measurement without limitations, ensuring continuous operation and insulation of high-voltage batteries and controllers.
Implementation Method 1
a transformer transforming voltage of a voltage measurement signal according to a wiring ratio of a first wiring and a second wiring
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a transformer relay and a battery voltage measurement system using the same and the transformer relay includes: a transformer unit transforming voltage of a voltage measurement signal according to a wiring ratio of a first wiring and a second wiring; and a relay unit transferring voltage of a battery while an operation state is changed to an On state when the transformed voltage of the voltage measurement signal is input and the battery voltage measurement system using the transformer relay, includes: the transformer unit; and a measurement unit measuring a battery voltage value by receiving the voltage of the battery from the relay unit.