Dual-Battery Vehicle Power Supply Layout for Lower Power Consumption
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Solution Overview
Problem
Existing vehicle power supply systems do not effectively manage power consumption, particularly in vehicles equipped with grid computing capabilities, leading to inefficiencies in energy usage.
Innovation Solution
A vehicle power supply system comprising a first secondary battery, a second secondary battery with lower output voltage, a DC power supply unit, a battery pack, and control devices that manage power distribution and charging between the batteries, allowing for separate control modes to optimize power usage and reduce consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If power is supplied directly from the DC power supply unit to the computer, then the computer can operate, but power consumption is not optimized
Solution Approach 1:
The power supply system is segmented into multiple secondary batteries (first and second secondary batteries) with different output voltages, each connected to different loads through separate step-down circuits. This segmentation allows independent power management for different computer systems, optimizing power consumption by selecting appropriate power sources based on operational needs while maintaining manageable system complexity through modular architecture.
2Adaptability or versatility
If the first step-down circuit is integrated with the computer, then the system is more compact, but the degree of freedom in vehicle design is reduced
Solution Approach 1:
The first step-down circuit is extracted from the computer system and positioned in the battery pack. This separation allows the step-down circuit to be independently optimized and positioned, providing greater design flexibility for vehicle layout while the computer maintains its functional independence. The extracted circuit can be shared across multiple power sources without increasing computer complexity.
3Adaptability or versatility
If only one secondary battery is used, then the system is simpler, but power distribution flexibility is reduced
Solution Approach 1:
The battery pack is designed to accommodate multiple secondary batteries with different output voltages (first and second secondary batteries), where each battery type serves different power distribution functions. The first secondary battery with higher output voltage serves high-power demands, while the second secondary battery with lower output voltage serves low-power demands. This multi-functional battery system provides versatile power distribution capabilities while maintaining manageable complexity through standardized battery pack architecture.
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
The system reduces power consumption in vehicles by strategically managing power distribution between the batteries and the computer systems, improving design flexibility and enabling efficient energy use in both charging and operation modes.
Implementation Method 1
a DC power supply unit configured to convert an input AC voltage into a DC voltage to output the DC voltage
Implementation Method 2
a first step-down circuit configured to step down an input DC voltage to output the stepped-down DC voltage, a second step-down circuit configured to step down an input DC voltage to output the stepped-down DC voltage
Implementation Method 3
a first secondary battery, a second secondary battery whose output voltage is lower than that of the first secondary battery
Data Source
AI summary
A vehicle power supply system includes a first secondary battery, a second secondary battery whose output voltage is lower than that of the first secondary battery, a power conversion device configured to convert an input AC voltage into a DC voltage and output the DC voltage, a battery pack configured to receive the DC power output from the power conversion device and charge the first secondary battery, DC/DC converters configured to step down an input DC voltage to output the stepped-down DC voltage, and a power control unit configured to control the battery pack. The first secondary battery is connected to input ports of the DC/DC converters via the battery pack. An output port of the DC/DC converter is connected to a video media control unit, and the DC/DC converter is provided separately from the video media control unit. An output port of the DC/DC converter is connected to the second secondary battery.