Battery Control Device Using Single Detector for Multi-Chemistry State Determination
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Solution Overview
Problem
Existing battery systems for movable bodies, such as vehicles and vessels, face increased costs due to the need for separate detectors for lead and lithium-ion storage batteries, which are used in conjunction, as they deteriorate over time, requiring determination of their state to replace them effectively.
Innovation Solution
A battery control device with a current detector, storage, and state determiner that detects current values and determines the state of lead and lithium-ion storage batteries by comparing initial and current values, allowing for low-cost determination of battery deterioration and timely replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate detectors are prepared for lead storage battery and lithium ion storage battery, then measurement precision of battery characteristics is improved, but device complexity and cost are increased
Solution Approach 1:
The patent applies universality by designing a single detector that can detect characteristics of both lead storage batteries and lithium ion storage batteries. The detector is configured to measure voltage, current, and temperature for both battery types, eliminating the need for separate detectors and reducing system complexity while maintaining measurement precision across different battery chemistries.
Solution Approach 2:
The patent merges the detection functions for lead storage batteries and lithium ion storage batteries into a single integrated detector unit. This consolidation combines multiple detection capabilities into one device, reducing the total number of components and simplifying the overall battery management system architecture.
2Reliability
If multiple detectors are used for different battery types, then reliability of battery state determination is improved, but manufacturing cost is increased
Solution Approach 1:
The single detector is designed with universal detection capabilities that cover both lead storage and lithium ion battery characteristics. By using one multi-functional detector instead of multiple specialized detectors, the system achieves comparable reliability in battery state determination while significantly reducing manufacturing costs and assembly complexity.
3Reliability
If battery deterioration is monitored continuously, then reliability of timely replacement decision is improved, but use of energy is increased
Solution Approach 1:
The battery control device implements periodic monitoring of battery characteristics instead of continuous monitoring. The detector measures voltage, current, and temperature at predetermined time intervals, which reduces energy consumption while still providing sufficient data to reliably determine battery deterioration trends and make timely replacement decisions.
Solution Approach 2:
The system uses feedback mechanisms where the control device analyzes detected battery characteristics and adjusts monitoring frequency or intensity based on battery state. When batteries are in good condition, monitoring can be less frequent, conserving energy. When deterioration signs are detected, the system increases monitoring intensity to ensure timely replacement decisions.
Data Source
AI summary
According to some embodiments, a battery control device has a current detector, a storage, and a state determiner. The current detector detects a current value of a current which flows into a second battery which is connected in parallel to a first battery. The first battery and the second battery are charged with a fixed current. The storage stores an initial value of the current which flows into the second battery if the second battery is charged with the fixed current in an initial use stage of the second battery. The state determiner determines a state of the first battery based on the current value detected by the current detector and the initial value stored in the storage.