Battery Status Measurement via Minimum Starting Voltage Detection
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Solution Overview
Problem
Existing methods for measuring the life health status of car batteries are inconvenient as they require disassembly of battery terminals and have low measurement accuracy due to simulated discharge conditions.
Innovation Solution
A battery status measurement method using a digital measuring instrument with a voltage detection circuit, comparing unit, and display, which connects to a load apparatus to measure the minimum starting voltage of a motor when started by a battery, comparing it to a threshold to determine battery status without disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If battery terminals are disassembled to test the battery, then measurement can be performed, but operation convenience deteriorates and system reliability may be compromised
Solution Approach 1:
The patent introduces a measuring instrument with clamps as an intermediary device that connects to the battery terminals without requiring disassembly. The clamps serve as a mediator between the testing system and the battery, enabling measurement while maintaining the original terminal connections intact.
2Measurement precision
If simulated discharge method is used to measure battery capacity, then measurement can be performed, but measurement precision deteriorates
Solution Approach 1:
The patent changes the measurement parameter from simulated discharge capacity to actual starting voltage under real cranking current conditions. By measuring the voltage drop during actual engine starting rather than simulated discharge, the method achieves higher precision in assessing battery health and cranking capability.
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 method allows for convenient and accurate measurement of battery health without disassembly, providing immediate results based on actual usage conditions, including ambient temperature and cranking current.
Implementation Method 1
The voltage detection circuit of the digital measuring instrument detects the starting voltage to obtain a minimum starting voltage value
Data Source
AI summary
A battery status measurement method includes following steps. A voltage detection circuit (102) is connected to a motor (202) and a battery (204). The battery (204) provides a starting voltage (206) to the motor (202) to start the motor (202). The voltage detection circuit (102) detects the starting voltage (206) to obtain a minimum starting voltage value (208). The voltage detection circuit (102) sends the minimum starting voltage value (208) to a comparing unit (104). The comparing unit (104) compares the minimum starting voltage value (208) and a starting voltage threshold value (210) to obtain a battery status signal (212). The comparing unit (104) sends the battery status signal (212) to a display (106). The display (106) displays the battery status signal (212).