Robotic Lawn Mower Battery Modules for Scalable Runtime
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Solution Overview
Problem
Conventional robotic lawn mowers have fixed batteries that require tools for removal and replacement, limiting runtime and user flexibility, and do not allow easy adaptation to varying lawn sizes or power needs.
Innovation Solution
A robotic lawn mower with a scalable power system featuring removable and rechargeable battery modules that can be easily added or removed, allowing users to customize energy capacity and extend operation duration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the battery is fixed to the chassis, then the structural stability is improved, but the ease of operation deteriorates because users must use tools to remove and replace the battery
Solution Approach 1:
The battery system is segmented into a battery pack that can be independently removed from the chassis. The battery pack is designed as a separate modular unit with connection interfaces that allow tool-free attachment and detachment, resolving the contradiction between structural stability and ease of replacement.
Solution Approach 2:
The battery mounting system transitions from a fixed static connection to a dynamic removable connection. The chassis includes receptacles with electrical and mechanical connection interfaces that enable the battery pack to be easily attached and detached while maintaining stable operation when installed.
2Reliability
If the battery is fixed to the chassis, then the reliability is improved, but the adaptability deteriorates because the runtime cannot be adjusted for different lawn sizes
Solution Approach 1:
The power system is segmented into multiple interchangeable battery packs with different energy capacities. Users can select and attach appropriate battery packs based on lawn size requirements, enabling the robotic lawn mower to adapt to different operational scenarios while maintaining reliable performance through standardized connection interfaces.
Solution Approach 2:
The chassis receptacles are designed with universal connection interfaces that can accommodate multiple types of battery packs with different capacities. This multi-functional design allows the same robotic mower to reliably operate with various battery configurations suited to different lawn sizes and operational needs.
3Device complexity
If a single battery is used, then the device complexity is reduced, but the duration of action deteriorates because the runtime is fixed and cannot be extended
Solution Approach 1:
The battery system is segmented into multiple modular battery packs that can be used individually or in combination. The chassis includes receptacles arranged to accept one or more battery packs, allowing users to extend operational runtime by adding additional battery packs without significantly increasing overall system complexity through standardized interfaces and modular architecture.
Data Source
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AI summary
A robotic lawn mower includes a first wheel driven by a first electric wheel motor, a second wheel driven by a second electric wheel motor, a cutting implement driven by an electric cutting implement motor, a power system for powering the electric wheel motors and the electric cutting implement motor, and a controller configured to control operation of the electric wheel motors and the electric cutting implement motor to autonomously mow a yard. The power system includes multiple removable rechargeable battery modules and multiple receptacles, each receptacle configured to receive one of the battery modules.