Auxiliary Battery Backup Assessment Using Polarization-Corrected Resistance
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Solution Overview
Problem
The existing power supply systems struggle to accurately determine whether an auxiliary equipment battery can provide necessary backup power due to significant polarization influences from charging, normal power supply, and discharge processes.
Innovation Solution
A power supply system that includes an acquisition unit to gather charge and discharge information of the auxiliary equipment battery, a correction unit to correct the internal resistance value based on this history, and a determination unit to assess backup power supply feasibility based on the corrected internal resistance value.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the auxiliary equipment battery is used for backup power supply, then the system can reduce device complexity by eliminating dedicated auxiliary power supply, but the measurement precision of backup capability determination deteriorates due to polarization influence
Solution Approach 1:
The system performs preliminary charge and discharge actions before backup capability determination. By conducting a charge process followed by a discharge process at a predetermined timing, the system eliminates polarization influence in advance, ensuring accurate measurement when determining whether the auxiliary equipment battery can provide backup power supply.
Solution Approach 2:
The system changes the operational state of the auxiliary equipment battery by controlling charge and discharge processes. By adjusting the charge-discharge cycle timing and intensity, the system modifies the polarization state to achieve accurate backup capability assessment while maintaining the battery's dual-function role.
2Adaptability or versatility
If the auxiliary equipment battery undergoes continuous charging and discharging processes, then the battery serves multiple functions (charging, normal power supply, backup), but the polarization influence increases making backup capability determination difficult
Solution Approach 1:
The control device executes a preliminary discharge process immediately after charging the auxiliary equipment battery. This preliminary action removes the polarization effect generated during charging, ensuring that subsequent backup capability determinations are made under polarization-free conditions, thereby maintaining high reliability despite continuous operation.
Solution Approach 2:
The system implements periodic charge-discharge cycles at predetermined timings. By regularly performing these cycles, the system manages polarization accumulation and ensures accurate backup capability assessment intervals, balancing continuous operation with reliable determination.
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
Enables appropriate determination of the auxiliary equipment battery's capability to output backup power, considering the impact of polarization from charging and discharging actions.
Implementation Method 1
an auxiliary equipment battery configured to be charged with electric power from the main equipment battery
Implementation Method 2
the auxiliary equipment battery is constantly influenced by polarization due to not only a charging process from a main equipment battery (main power supply) but also, for example, a normal power supply process for the auxiliary equipment load and a discharge process (pumping-out process) for the main equipment battery
Data Source
AI summary
A power supply system for controlling power supply to a load using a main equipment battery and an auxiliary equipment battery, the power supply system comprising: an acquisition unit that acquires charge/discharge information of the auxiliary equipment battery at a predetermined timing and accumulates the charge/discharge information as a charge/discharge history; a correction unit that corrects an internal resistance value of the auxiliary equipment battery based on the charge/discharge history; and a determination unit that determines whether backup power supply by the auxiliary equipment battery is possible when the main equipment battery fails based on the internal resistance value of the corrected auxiliary equipment battery.