Riding Mower Battery Pack Control for Current-Limited Power Output
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Riding-type mowers powered by diesel fuel face environmental pollution and high maintenance costs due to frequent replacement of vulnerable fuel system parts.
Innovation Solution
A riding-type mower powered by a battery pack with a current-limiting protection method, featuring a power supply device with multiple battery packs and a power management module that monitors and controls the discharge of battery cell groups to ensure safe and efficient energy distribution, preventing overcurrent and extending battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If diesel power is used in riding-type mowers, then power supply capability is sufficient, but environmental pollution increases and maintenance costs rise due to frequent fuel system part replacement
Solution Approach 1:
The patent replaces the diesel mechanical power system with an electrical power system consisting of multiple battery packs and a power management module. This substitution eliminates exhaust emissions and fuel system maintenance while providing sufficient power through coordinated discharge of multiple battery packs, with the power management module optimizing current distribution to meet power demands.
2Power
If multiple battery packs are used to provide sufficient power, then power supply capability increases, but system complexity increases due to need for power management and current distribution control
Solution Approach 1:
The power management module performs multiple functions simultaneously: it monitors the state of charge of each battery pack, calculates optimal current distribution ratios, controls the discharge process, and ensures coordinated operation. This multi-functionality consolidates complex power management tasks into a single intelligent controller, reducing overall system complexity despite using multiple battery packs.
3Power
If battery packs discharge at high current to meet power demands, then power output is sufficient, but battery life decreases and safety risks increase due to overcurrent
Solution Approach 1:
The patent implements dynamic current distribution where the power management module continuously monitors battery pack states and adjusts current allocation in real-time. Each battery pack receives a customized current ratio based on its state of charge and health status, allowing the system to optimize power output while preventing overcurrent conditions that would reduce battery life or create safety hazards.
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 battery-powered riding-type mower reduces environmental pollution, lowers maintenance costs, and ensures reliable operation by managing energy distribution effectively, enhancing the mower's performance and safety.
Implementation Method 1
The power supply device includes a plurality of battery packs and a power management module. The plurality of battery packs are configured to supply an energy source to the riding-type mower
Implementation Method 2
The power management module is configured to determine whether the plurality of battery packs satisfy a discharge condition and control a battery pack satisfying the discharge condition to discharge
Data Source
AI summary
A riding-type mower includes a power supply device and the power supply device includes a plurality of battery packs and a power management module. The plurality of battery packs are detachably mounted to the riding-type mower and further configured to supply electric energy to a hand-held electric power tool. The plurality of battery packs each are provide with at least one battery cell group, and each battery cell group includes a plurality of battery cells electrically connected to each other. The power management module is configured to determine whether the plurality of battery packs satisfy a discharge condition and control a battery pack satisfying the discharge condition to discharge when the battery pack satisfies the discharge condition.