Battery Voltage Monitoring With Synchronized Current Timing
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Solution Overview
Problem
Existing battery monitoring systems experience synchronization shifts between voltage and current measuring timings due to variations in processing times during communication, leading to measurement errors.
Innovation Solution
A battery monitoring system that synchronizes current and voltage measuring timings by using output signals from communication units to set measuring times, eliminating the need for additional time synchronization processing and reducing the influence of processing variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If time information processing is performed before and after communication to synchronize measuring timings, then measuring timing synchronization is achieved, but processing time variations cause synchronization shifts
Solution Approach 1:
The patent extracts the time synchronization function from the communication processing steps. Instead of performing time information addition and analysis within the communication protocol, a dedicated time information management unit operates independently to generate and manage timing signals, separating the synchronization function from the data communication function.
Solution Approach 2:
The patent introduces a time information management unit as an intermediary component that mediates between the communication units and the measuring circuits. This unit receives timing information from communication, processes it through dedicated time management logic, and generates synchronized timing signals for voltage and current measurements, acting as a buffer that eliminates processing time variations.
2Measurement precision
If additional time synchronization processing is performed, then timing accuracy is improved, but device complexity increases
Solution Approach 1:
The patent merges the time synchronization function with the existing communication unit structure. The time information management unit utilizes the communication unit's timing signals and integrates time management logic within the same functional block, combining communication and time management operations to avoid adding separate complex synchronization hardware.
Solution Approach 2:
The communication unit is designed to serve multiple functions: data transmission, timing signal generation, and time information management. By making the communication unit multi-functional, the patent eliminates the need for dedicated separate synchronization hardware, reducing overall device complexity while maintaining timing accuracy.
Data Source
AI summary
A battery monitoring system includes: a current measuring device configured to measure a current of a battery and output a current value; a voltage measuring device including a voltage measuring circuit that measures a voltage of the battery, a first microcomputer that controls the voltage measuring circuit, and a first wireless communication unit; and a battery monitoring device including a second wireless communication unit, and a second microcomputer to which the current and voltage values are input. The second microcomputer outputs a current measuring request signal to the current measuring device after elapse of a first time based on an output signal from the second wireless communication unit, and the first microcomputer controls the voltage measuring circuit to measure the voltage after elapse of a second time synchronized with the first time based on an output signal from the first wireless communication unit.


