Hierarchical Vehicle Power Supply Control for Energy Management
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Solution Overview
Problem
Conventional vehicle power supply control devices lack an efficient mechanism to manage power distribution across different load groups, leading to suboptimal power usage and potential overconsumption, which can strain the vehicle's battery and affect overall power management.
Innovation Solution
A vehicle power supply control device with a hierarchical structure comprising load power supply controllers, area power supply controllers, and a master power supply controller, which sets power limits and adjusts power distribution based on real-time consumption data to optimize power usage across different vehicle areas, ensuring that power is selectively supplied only to necessary devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a conventional power supply control device supplies power to all devices through power supply boxes with switches, then power can be distributed to multiple devices, but power management becomes inefficient and leads to overconsumption
Solution Approach 1:
The power supply control device is segmented into multiple hierarchical levels: power supply controllers at the vehicle level, area power supply controllers at the regional level, and load power supply controllers at the device level. This segmentation allows decentralized power management where each controller independently monitors and controls power consumption in its jurisdiction, preventing overall power overconsumption while maintaining system functionality.
Solution Approach 2:
The power supply control system implements dynamic power allocation where controllers continuously adjust power distribution based on real-time consumption data, device priority, and operational status. The master controller dynamically modifies power limits for area controllers, which in turn adjust power to individual loads, creating a flexible adaptive system that responds to changing vehicle conditions rather than using fixed static allocation.
2Productivity
If power is supplied to all load groups without selective control, then all devices can operate, but battery strain increases and fuel efficiency decreases
Solution Approach 1:
Different load groups receive differentiated power management based on their specific requirements, priority levels, and operational contexts. The system applies local quality control where area power supply controllers manage power distribution within specific vehicle regions (e.g., driver area, passenger area, cargo area) according to local needs, allowing critical devices to receive adequate power while non-critical devices receive reduced or no power during constrained conditions.
Solution Approach 2:
The power supply control system implements multi-level feedback mechanisms where load controllers report consumption data to area controllers, which report to the master controller. The master controller uses this feedback to assess overall power status and adjust power limits dynamically. This closed-loop feedback enables the system to respond to actual power consumption patterns and battery status, optimizing the balance between device operation capability and battery preservation.
Data Source
AI summary
A vehicle power supply control device includes a plurality of area power supply slaves connected with respective different device groups configured with a plurality of different devices installed in a vehicle, and controlling power supplied to the devices in the connected device groups, a plurality of area power supply masters that are connected with respective different area power supply slaves and control power supplied to the connected area power supply slaves, and a vehicle power supply master connected with the area power supply masters and a battery of the vehicle and controlling power supplied to the area power supply masters from the battery.