Battery Capacity Supervisory Control for Inverter Power Management
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Solution Overview
Problem
Existing devices fail to effectively display the remaining battery capacity and usable time when using DC-to-AC inverters, leading to inefficient power usage and potential car starting issues due to battery overuse, especially in vehicles.
Innovation Solution
A battery-capacity supervisory control device comprising a DC current/DC voltage detecting loop, microprocessor, and display unit that calculates and displays the available battery capacity and time by detecting output current and voltage, and includes a timer and warning device for power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the inverter is operated for converting electrical power from the battery to the electrical appliance, then the electrical appliance can be powered, but the battery power is overly used and the car will be unable to start
Solution Approach 1:
The patent implements a supervisory control device that continuously monitors battery voltage and current, calculates remaining capacity in real-time, and provides feedback to the user through display and warning functions. This feedback mechanism enables users to understand battery status and adjust usage accordingly, preventing complete battery depletion that would prevent car starting.
Solution Approach 2:
The device performs preliminary calculation and display of remaining battery capacity and estimated usable time before the battery is completely depleted. By showing users the remaining capacity in advance, the system allows them to take preliminary actions to conserve battery power or recharge, preventing the scenario where the battery is overly used and the car cannot start.
2Use of energy by moving object
If the inverter is operated for converting electrical power from the battery to the electrical appliance, then the electrical appliance can be powered, but oil wasting is caused when the car is kept on running with idle speed
Solution Approach 1:
The supervisory control device provides real-time feedback on battery capacity consumption and power conversion efficiency. By displaying remaining capacity and usable time, the system enables users to optimize their power usage patterns, reducing unnecessary runtime at idle speeds and thereby minimizing oil wasting while maintaining effective battery power conversion for needed applications.
3Device complexity
If no device can display the remaining capacity and usable time of the battery, then the device structure remains simple, but users cannot effectively supervise and assure the battery is in the usable state
Solution Approach 1:
The supervisory control device integrates multiple functions into a single unit: it monitors battery voltage and current, calculates remaining capacity, estimates usable time, displays this information, and provides warnings. This multi-functionality consolidates what would otherwise require separate devices, maintaining relative simplicity while dramatically improving ease of operation for battery capacity supervision.
4Productivity
If the battery is used without monitoring the remaining capacity, then the power distribution is simple, but the user cannot effectively distribute the limited electric power
Solution Approach 1:
The device continuously monitors battery status and provides real-time feedback on remaining capacity and power consumption rates. This feedback enables users to make informed decisions about power distribution, prioritizing critical loads and adjusting usage patterns to maximize the effective utilization of limited battery power throughout its remaining capacity.
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 users to effectively distribute and supervise battery power, preventing overuse, ensuring the battery remains in a usable state, and providing timely warnings for optimal energy consumption.
Implementation Method 1
The DC current/DC voltage detecting loop is electrically connected between a battery and a power inverter for detecting output current and voltage of the battery
Data Source
AI summary
A battery-capacity supervisory control device includes a DC current/DC voltage detecting loop, a microprocessor and a display unit. The DC current/DC voltage detecting loop is connected between a battery and a power inverter for detecting a first voltage value before the battery electrically discharges, and a second voltage value as well as an output current value of the battery after electrically discharging for a time unit of the battery, to calculate the available capacity of the battery and to calculate the available time of the battery under loading according to the available capacity of the battery through the microprocessor. The display simultaneously displays the available time of the battery under loading and the available capacity of the battery. Therefore, a user effectively supervises and assures the battery is in the usable state.