Battery Type Identification Using Dual-Signal Cross-Validation
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Solution Overview
Problem
Existing battery identification methods face challenges in accurately determining the type of a battery due to similar characteristics among multiple batteries, leading to potential erroneous estimations.
Innovation Solution
A battery control device that utilizes two distinct identification methods, one based on identification voltage and another on identification information, to estimate the type of the battery, thereby improving accuracy by comparing and matching results from both methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a type of battery is estimated using characteristics such as voltage, current, internal resistance, and SOC, then the battery type can be identified, but erroneous estimation occurs when there is a plurality of batteries having similar characteristics
Solution Approach 1:
The identification method is segmented into two independent parts: first identification based on electrical characteristics (voltage, current, internal resistance, SOC) and second identification based on identification voltage. By dividing the identification process into separate segments, the system can cross-validate results and reduce erroneous estimations that occur when relying on a single method with similar battery characteristics.
Solution Approach 2:
An identification voltage is introduced as an intermediary signal that is output according to the battery type. This intermediary element serves as an additional reference point that mediates between the electrical characteristics and the final type estimation, providing an extra layer of verification to improve reliability when batteries have similar electrical characteristics.
2Measurement precision
If only one identification method is used, then the identification process is simple, but the accuracy of battery type estimation is insufficient
Solution Approach 1:
Two different identification methods are merged into a unified estimation process. The first identification (based on electrical characteristics) and the second identification (based on identification voltage) are combined, with the estimation unit synthesizing both results to determine the final battery type. This merging approach improves accuracy while managing complexity through systematic integration.
Solution Approach 2:
The battery itself provides the identification voltage as an inherent characteristic that serves the identification purpose. By utilizing information that is already present in the battery (the identification voltage output according to battery type), the system improves accuracy without requiring external complex identification devices, thus managing complexity through self-service identification.
Data Source
AI summary
A battery control device includes: a first identification unit configured to acquire an identification voltage which is output according to a type of a battery from the battery and to identify the type of the battery based on the acquired identification voltage; a second identification unit configured to acquire identification information for identifying the type of the battery from the battery and to identify the type of the battery based on the acquired identification information; and an estimation unit configured to estimate the type of the battery based on an identification result from the first identification unit and an identification result from the second identification unit.