Vehicle Battery Charge-Discharge Schedule Management
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Solution Overview
Problem
Existing charge-discharge management systems for vehicles uniformly manage battery energy states, leading to overcharge or battery depletion issues, especially when traveling on hilly routes or carrying varying loads, which can result in inefficient energy use and battery damage.
Innovation Solution
A charge-discharge management system that creates and corrects schedules based on specific travel routes, vehicle conditions, and road conditions, dividing routes into sections to compare actual and predicted charge amounts, and adjusts schedules accordingly to maintain a charge within predetermined limits, using a communication device to receive business schedules and road information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform battery energy state management is used, then the management system is simple, but overcharge or battery depletion occurs on hilly routes or with varying loads
Solution Approach 1:
The travel route is divided into multiple sections, and the battery management is segmented into charge sections and discharge sections based on road conditions (uphill/downhill). This segmentation allows different management strategies for different route sections, preventing overcharge and depletion while maintaining manageable system complexity.
Solution Approach 2:
The battery management system dynamically adjusts charge-discharge schedules based on actual vehicle conditions, road conditions, and battery state. The system creates and corrects schedules in real-time, transitioning from static uniform management to dynamic adaptive management, thereby improving reliability without excessive complexity.
2Loss of energy
If regenerative braking is used to store electricity on downhill, then energy efficiency improves, but overcharge occurs when load exceeds schedule
Solution Approach 1:
The system preliminarily determines charge sections and discharge sections based on the travel route and vehicle conditions before actual charging/discharging occurs. By pre-planning the charge-discharge schedule and considering regenerative braking opportunities in advance, the system prevents overcharge while maximizing energy recovery from downhill sections.
Solution Approach 2:
The system continuously monitors actual battery charge amount and compares it with the scheduled charge amount. Based on this feedback, the system corrects the charge-discharge schedule for subsequent sections, adjusting regenerative braking utilization to prevent overcharge while maintaining energy efficiency.
3Device complexity
If battery manages only present energy state, then management is simple, but battery runs out on hilly routes with higher consumption
Solution Approach 1:
The system preliminarily creates a charge-discharge schedule for the entire travel route based on road conditions (uphill/downhill sections) and vehicle conditions. This preliminary planning ensures sufficient energy is allocated for high-consumption hilly sections, preventing battery depletion while maintaining manageable system complexity.
Solution Approach 2:
The system dynamically corrects the charge-discharge schedule based on actual battery state and remaining route conditions. This dynamic adjustment allows the system to adapt to varying consumption rates on hilly routes, ensuring the battery operates duration is sufficient throughout the journey without excessive management complexity.
Data Source
AI summary
A charge-discharge management system for a vehicle running using electricity stored in a battery is disclosed. The system creates a charge-discharge schedule of the battery for a travel route of the vehicle according to the travel route of the vehicle and a condition of the vehicle or a road, so that a charge amount of the battery falls within a predetermined range in the travel route. The systems corrects the charge-discharge schedule by comparing between the charge amount actually in the battery and the charge amount in the charge-discharge schedule.