Electric Mower Battery Placement for Balance
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Solution Overview
Problem
Existing manned mowing tractors rely on diesel fuel, causing noise pollution, environmental harm, and high maintenance costs due to frequent replacement of fuel system parts. Additionally, the large fuel engine occupies most of the front space, limiting versatility.
Innovation Solution
A manned mower design featuring an energy storage device, such as a lithium iron phosphate battery pack, positioned on the front side of the seat to power the cutting and walking assemblies. The energy storage device is integrated into a front cover with an accommodation cavity, optimizing space and reducing noise and pollution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a diesel fuel engine is used to power the mowing tractor, then sufficient power is provided for cutting and walking assemblies, but noise pollution and environmental pollution increase along with maintenance costs
Solution Approach 1:
The patent replaces the diesel fuel engine (mechanical combustion system) with an energy storage device (electrical system). The energy storage device includes battery packs arranged in series to provide electrical power to the cutting assembly and walking assembly, eliminating the need for fuel combustion and associated pollution while maintaining sufficient power output.
2Power
If a diesel fuel engine is used, then sufficient power is provided, but the large fuel engine occupies most space in the front of the mowing tractor
Solution Approach 1:
The patent substitutes the bulky diesel engine with a compact energy storage device consisting of multiple battery packs. These battery packs occupy significantly less space in the front of the tractor, freeing up front space for other components or storage while still providing adequate power through electrical systems.
Solution Approach 2:
The energy storage device is segmented into multiple battery packs that can be arranged in series configuration. This segmentation allows for flexible spatial arrangement within the front space, optimizing both power output and space utilization compared to a single large fuel engine.
3Power
If a diesel fuel engine is used, then power is provided, but frequent replacement of quick-wear parts in fuel system is required, increasing maintenance costs
Solution Approach 1:
The patent replaces the complex fuel system with a simpler electrical energy storage system. The battery packs and electrical components have fewer quick-wear parts compared to fuel injection systems, filters, and exhaust components, significantly reducing maintenance frequency and costs while maintaining power delivery capability.
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 electric manned mower is more environmentally friendly and energy-efficient, reducing maintenance costs and improving space utilization for storage and tool attachments, while enhancing user comfort and versatility.
Implementation Method 1
The energy storage device includes at least one battery pack, where the at least one battery pack includes lithium iron phosphate cells
Data Source
AI summary
A manned mower includes a seat; a frame for supporting the seat; a cutting assembly mounted on the frame and including a mowing element for cutting grass; a walking assembly mounted on the frame and including a left walking wheel and a right walking wheel; an energy storage device disposed on the front side of the seat and configured to supply power to the cutting assembly and the walking assembly; and a front cover disposed on a front portion of the manned mower and formed with an accommodation cavity for accommodating at least the energy storage device. In a front and rear direction, the center of gravity of the energy storage device is located before a line between the center point of the left walking wheel and the center point of the right walking wheel.