Dual-Battery Electrical Module for Low-Loss Power Source Selection
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Solution Overview
Problem
Existing systems for selecting an appropriate power source for electronic devices in vehicles do not efficiently manage power loss across multiple batteries with different output voltages, leading to suboptimal energy utilization.
Innovation Solution
An electrical module with a controller that determines the power requirements of external devices and calculates power losses associated with multiple batteries, automatically selecting the battery with the lowest power loss to supply electrical current.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If a system uses multiple batteries with different output voltages to power external devices, then the system can provide continuous power supply, but the system experiences increased power loss and energy inefficiency due to voltage mismatches
Solution Approach 1:
The system dynamically selects which battery to use based on real-time conditions including voltage requirements and power loss calculations. The controller continuously monitors battery states and adjusts the power source selection to optimize efficiency while maintaining continuous supply capability.
Solution Approach 2:
The system changes operational parameters by selecting different batteries based on their output voltages and the power requirements of connected devices. The controller calculates power loss for each battery option and selects the optimal source, effectively changing the system's electrical parameters to minimize energy waste.
2Loss of energy
If the system automatically selects power sources based on power loss calculations, then energy efficiency is optimized, but the device complexity increases due to additional control circuitry
Solution Approach 1:
The system performs self-optimization by automatically calculating power loss for each battery option and selecting the most efficient power source without external intervention. The controller autonomously monitors battery states, computes efficiency metrics, and makes selection decisions, reducing the need for complex external control systems.
Solution Approach 2:
The system implements feedback mechanisms where the controller continuously monitors battery voltage, current, and power loss calculations. This feedback loop enables the system to adapt its power source selection in real-time, optimizing energy efficiency while using relatively simple control logic that processes feedback information.
3Loss of energy
If the system monitors power requirements and calculates power loss for multiple batteries, then optimal power source selection is achieved, but the measurement and detection difficulty increases
Solution Approach 1:
The controller serves multiple functions: it detects battery voltage and current, calculates power requirements of connected devices, computes power loss for each battery option, and makes selection decisions. This multi-functionality consolidates complex measurement and detection tasks into a single control unit, simplifying the overall system architecture.
Data Source
AI summary
An electrical module is configured for connection with a first battery, a second battery, and an external electrical device. The electrical module includes a first switch, a second switch, and a controller electrically connected to the first switch and the second switch. The controller is configured to determine at least one of a power requirement of, or an electrical load drawn by, the external electrical device. In response to determining the at least one of the power requirement of, or the electrical load drawn by, the external electrical device, the controller is configured to determine (i) a first power loss associated with the first battery and (ii) a second power loss associated with the second battery. The controller is configured to automatically select the first battery to supply electrical current to the external electrical device based on the first power loss being less than the second power loss.