Riding Lawn Mower Dual Energy Storage for Long Outdoor Operation
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Solution Overview
Problem
Existing outdoor walking equipment, such as riding lawn mowers, face limitations in energy storage capacity and flexibility, failing to meet the needs of professional users who require extended operation times and diverse outdoor tasks due to the use of fixed batteries or large, costly detachable batteries.
Innovation Solution
The implementation of a dual energy storage system comprising a detachable first energy storage device and a fixed second energy storage device, each with different installation methods and energy densities, allowing for enhanced power supply flexibility and capacity, including a plug-in and snap-on connection for the first device and a fixed connection for the second, respectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a built-in fixed battery is used as the energy storage device, then the equipment structure is simple and reliable, but the maximum energy storage capacity is limited and cannot meet the need for long-duration outdoor work
Solution Approach 1:
The energy storage system is divided into a first energy storage device with a first battery pack and a second energy storage device with a second battery pack. The first battery pack can be quickly replaced while the second battery pack provides extended capacity, allowing the equipment to maintain reliable operation while significantly extending operational duration through modular segmentation of the energy storage system.
2Duration of action of moving object
If large detachable batteries are installed to extend operational time, then the energy storage capacity increases, but the device size and cost increase significantly
Solution Approach 1:
The patent combines a first battery pack designed for quick replacement with a second battery pack designed for extended capacity within the same energy storage system. This merging allows the equipment to achieve long operational duration without requiring a single large, heavy battery, as the two battery packs work together to provide both immediate and extended power needs.
Solution Approach 2:
The first battery pack is designed with universal compatibility to be quickly interchangeable between different equipment or storage locations, while the second battery pack provides supplementary capacity. This multi-functional design allows the same battery system to serve both as a portable quick-swap power source and as an extended capacity reservoir, reducing the need for multiple specialized large batteries.
3Device complexity
If a single fixed battery is used, then the device complexity is low, but the adaptability to various outdoor tasks is insufficient
Solution Approach 1:
The energy storage system transitions from a static fixed battery configuration to a dynamic modular system where the first battery pack can be quickly swapped and the second battery pack can be selectively engaged. This dynamic configuration allows the system to adapt its capacity and responsiveness to match different task requirements, maintaining low operational complexity while significantly improving task adaptability.
Solution Approach 2:
The patent enables parameter changes in the energy storage system by allowing substitution of battery packs with different capacities and characteristics. The first battery pack can be replaced with variants optimized for different power needs, while the second battery pack can be adjusted to provide varying levels of extended capacity, allowing the system to optimize its electrical parameters for different outdoor tasks without increasing fundamental system complexity.
Data Source
AI summary
A riding lawn mower, including: a frame; a seat; a walking assembly and a walking motor; a cutting assembly and a driving motor configured to drive the cutting assembly; a first energy storage device configured to supply power to at least one of the walking motor or the driving motor, the first energy storage device including at least one first energy storage unit, the first energy storage device detachably mounted to the frame and enabled to supply power to a handheld power tool when detached from the riding lawn mower; and a second energy storage device configured to supply power to at least one of the walking motor or the driving motor, the second energy storage device including at least one second energy storage unit; wherein an energy density of the second energy storage unit is different from an energy density of the first energy storage unit.