Lawn Mower Battery Cooling Layout for Accessible Pack Replacement
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Solution Overview
Problem
Current electric-type lawn mowers face inefficiencies in battery cooling, leading to excessive heating and potential damage, as single fans are insufficient for effective cooling of battery packs, and the central battery arrangement complicates user access for replacement.
Innovation Solution
A battery cooling apparatus with compartmentalized supports and containers that allow air to enter through slots and are equipped with fans to circulate air through the battery packs, enhancing cooling and facilitating easier battery replacement by positioning the containers below the seat for improved accessibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a single fan is used to cool all batteries, then the cooling system is simple, but the cooling effectiveness is insufficient leading to excessive heating
Solution Approach 1:
The cooling system is divided into multiple independent fan units, with at least one fan dedicated to each battery pack. This segmentation allows each fan to effectively cool its specific battery pack, preventing excessive heating while maintaining reasonable system complexity through modular design.
2Ease of operation
If batteries are arranged in the central part of the lawn mower, then the structure is compact, but user access for battery removal becomes inconvenient
Solution Approach 1:
The battery packs are extracted from the traditional central chassis mounting and repositioned to the rear part of the lawn mower. This extraction allows users to easily access and remove batteries by simply opening the rear access panel, significantly improving ease of operation while the overall mower structure remains compact through optimized space utilization.
3Reliability
If one fan cools all battery packs, then the device complexity is low, but the cooling coverage is insufficient
Solution Approach 1:
The cooling system is segmented into multiple independent fan units, with at least one fan dedicated to each battery pack. This segmentation allows each fan to effectively cool its specific battery pack, preventing excessive heating while maintaining reasonable system complexity through modular design.
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 enhanced cooling system effectively manages battery temperature, reducing the risk of damage and simplifies battery replacement by ensuring cleaner air flow and improved airflow pathways, enhancing user convenience and equipment longevity.
Implementation Method 1
at least one fan for each battery pack support able to suck in incoming air from the slots of said door and circulating inside the battery pack through said cavity and the related slots on the bottom of the battery pack
Data Source
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Figure 5
AI summary
A lawn mower is described, provided with at least one grass cutting blade (3) moved by an electric motor and a traction device comprising a further electric motor. The lawn mower comprises a power supply device (5) for said electric motors, comprising at least one battery pack (55) and an apparatus (100) for cooling the at least one battery pack comprising: - at least one support (52) for said at least one battery pack comprising a compartment able to accommodate the battery pack, said compartment comprising a cavity (59) on the bottom not occupied by the battery pack when the battery pack is inserted into the support, said battery pack comprising related slots (559) on the bottom, - at least one container (50) able to accommodate said at least one battery pack support, said container being closed by a door (56) comprising slots (57) for the air to enter into said at least one battery pack support and the container; - at least one fan (54) for each battery pack support able to suck in incoming air from the slots of said door and circulating inside the battery pack through said cavity and the related slots on the bottom of the battery pack (Fig. 5).