Vehicle Battery Capacity Equalization Through Traction Force Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In multi-marshalling vehicles, inconsistent battery pack capacities across carriages can lead to power outages, as each carriage's battery pack operates independently and with varying initial capacities, causing uneven power consumption and potential system failures.
Innovation Solution
A method is implemented to equalize battery capacities by determining the largest and smallest battery capacities, calculating corresponding traction forces, and outputting control commands to adjust load and level values, ensuring consistent capacity across carriages through a processor and memory-based electronic device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If battery packs in different carriages operate independently with varying initial capacities, then each carriage can function autonomously, but the battery capacities become inconsistent leading to power outages
Solution Approach 1:
The patent merges the independent battery packs across multiple carriages into a unified energy management system. The equalization control unit combines information from all battery packs and coordinates their operation, allowing the system to maintain autonomous carriage operation while ensuring capacity consistency through centralized control and equalization strategies.
2Reliability
If battery capacities are equalized across carriages, then power outage risk is reduced, but additional control mechanisms and communication systems are required
Solution Approach 1:
The equalization control unit performs multiple functions: it monitors battery capacities, determines equalization needs, calculates equalization strategies, and sends control commands to multiple battery packs simultaneously. This multi-functional approach consolidates what would otherwise require separate control systems for each carriage, reducing overall system complexity while maintaining power supply stability.
3Reliability
If traction forces are adjusted to equalize battery capacities, then capacity consistency is improved, but traction performance may be affected
Solution Approach 1:
The patent implements dynamic adjustment of traction forces based on real-time battery capacity states. The equalization control unit continuously monitors capacity differences and adjusts traction force distribution accordingly, allowing the system to optimize both capacity equalization and traction performance under varying operating conditions rather than using fixed force allocations.
Data Source
AI summary
A method for equalizing battery capacities of a vehicle includes: determining, based on a current capacity of a battery of each of carriages, a largest battery capacity and a corresponding first carriage thereof, and a smallest battery capacity and a corresponding second carriage thereof; determining, based on the largest battery capacity and the smallest battery capacity, a first traction force and a second traction force, where the first traction force is greater than the second traction force; and outputting a first control command including the first traction force to the first carriage, and outputting a second control command including the second traction force to the second carriage for equalizing battery capacities of the carriages of the vehicle.