Electric Mower Controller Layout Beside Battery for Cooling and Dust Blocking
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Solution Overview
Problem
Existing electric mowers face challenges in efficiently and accurately mounting large-capacity batteries and associated components, such as motors and controllers, while ensuring effective cooling and dust prevention.
Innovation Solution
The electric mower design includes a battery covered by a cover with side walls, where controllers are positioned between the battery and side walls, allowing for shared cooling elements and dust prevention, with openings and inclined dust preventer plates to protect the controllers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If a large-capacity battery is installed to improve mowing efficiency, then the battery capacity increases, but the space for mounting other components decreases
Solution Approach 1:
The controller is positioned in the lateral dimension between the side wall and battery, rather than occupying longitudinal space. This dimensional repositioning allows the controller to be accommodated without reducing battery capacity, as it utilizes the width-wise space between the battery and side wall.
2Adaptability or versatility
If the controller is mounted separately from the battery, then the controller positioning flexibility increases, but the number of components increases
Solution Approach 1:
The controller mounting structure merges the controller with the battery assembly by positioning it in the space between the side wall and battery. This integration reduces the number of separate component assemblies while maintaining positioning flexibility through the defined spatial relationship.
3Temperature
If cooling elements are added for the battery, then the battery cooling efficiency improves, but the device complexity increases
Solution Approach 1:
The cooling element serves dual functions: cooling the battery and cooling the controller. This multi-functionality eliminates the need for separate cooling systems for each component, thereby improving cooling efficiency while avoiding increased device complexity.
4Temperature
If openings are created for controller cooling, then the controller cooling efficiency improves, but dust ingress increases
Solution Approach 1:
The dust preventer plate acts as an intermediary element between the cooling opening and the external environment. It allows air flow for cooling while blocking dust particles, thus maintaining cooling efficiency while preventing dust ingress.
Solution Approach 2:
The dust preventer plate is strategically positioned at the opening location, providing localized dust protection only where needed for cooling airflow. This localized approach maintains cooling efficiency while preventing dust ingress at the critical opening point.
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
This configuration enables efficient mounting and cooling of components, while preventing dust ingress, thereby enhancing the operational efficiency and reliability of the electric mower.
Implementation Method 1
Batteries typically need cooling. An electric mower may include an element for cooling its battery, for example, inside a battery cover.
Implementation Method 2
Placing the controller in the above space allows an element for cooling the battery to be used also to cool the controller.
Implementation Method 3
a dust preventer plate configured to prevent suction of dust through the opening
Implementation Method 4
the at least one controller includes a heat sink section exposed through the opening
Data Source
AI summary
An electric mower includes: a body; a battery on the body; a cover including: a back wall backward of the battery; and a left side wall and a right side wall each extending forward from the back wall, the cover covering at least a portion of the battery; at least one motor drivable by the battery; and at least one controller disposed between the battery and at least one of the left and right side walls and configured to control the at least one motor.