Riding Mower Battery Layout for Slope Stability and Service Access
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Solution Overview
Problem
Current battery-powered riding mowers experience instability due to the rear placement of the battery assembly, leading to a shifted center of gravity, which causes the mower to tilt forward on slopes or when starting, and the electronic control system's location under the seat creates maintenance challenges.
Innovation Solution
The battery assembly is positioned in the middle of the mower, between the front and rear wheels, ensuring even load distribution and enhancing stability, while also relocating the electronic control system to improve accessibility for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the battery assembly is placed at the tail of the mower, then the structure is simple and easy to manufacture, but the center of gravity shifts backward causing the mower to head up on slopes or during sudden starts
Solution Approach 1:
The battery assembly is repositioned from a single-point rear placement to a distributed arrangement spanning the central region of the mower body, effectively changing the spatial dimension of weight distribution. This dimensional shift in battery placement allows the center of gravity to be optimized for stability while maintaining manufacturing simplicity.
2Stability of the object's composition
If counterweight is added to the front of the mower to move the center of gravity forward, then the stability improves, but the invalid load increases and work efficiency is reduced
Solution Approach 1:
The dedicated counterweight component is extracted and eliminated from the design. Instead of adding separate counterweight mass to the front, the battery assembly itself is repositioned to serve the dual function of power supply and weight distribution, removing unnecessary mass while achieving stability.
Solution Approach 2:
The battery assembly is given multiple functions: it serves as both the power source and the weight distribution mechanism. This multi-functionality eliminates the need for separate counterweight components, reducing invalid load while maintaining stability.
3Volume of moving object
If the electronic control system is arranged under the seat, then the space utilization is improved, but the wiring and maintenance become difficult due to narrow space
Solution Approach 1:
The electronic control system is segmented from the main body and relocated to an independent, accessible position. This segmentation allows the control system to be positioned in a location that provides both adequate space utilization and easy access for wiring, debugging, and maintenance operations.
Data Source
AI summary
A riding mower, which comprises a wheel assembly, a body arranged on the wheel assembly and a battery assembly, the wheel assembly has a front wheel assembly provided with a front shaft and a front wheel and a rear wheel assembly provided with a pair of rear shafts and a pair of rear wheels. The battery assembly is mounted on the body, and a gravity center of the battery assembly is located between the front shaft and the rear shafts along a front to back direction. The riding mower of the present invention can enhance the driving stability of the riding mower and further solve the problems of easy head up and low efficiency of the existing riding mower.