Waterproof Battery Case with Gas Filter for Marine Power
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Solution Overview
Problem
Existing power supply apparatuses for electric outboard motors are exposed to water, leading to issues with electric leakage and short circuits, and are difficult to move due to lack of wheels and high capacity battery packs.
Innovation Solution
A power supply apparatus with a battery pack case that is waterproof, equipped with a filter to allow gas passage while preventing liquid entry, and includes a carrying handle and wheels for easy movement, housed in a liquid-tight battery pack case with a cable system for connecting to the electric outboard motor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the power supply apparatus is installed on the deck of the hull, then it is accessible and easy to operate, but it is exposed to rainwater and wave splashes causing electric leakage and short circuits
Solution Approach 1:
A waterproof box serves as an intermediary container that houses the power supply apparatus. The box is equipped with a waterproof cover that can be opened when access is needed and closed to provide waterproof protection during operation, thus mediating between the need for accessibility and the need for water protection.
Solution Approach 2:
The waterproof box utilizes a flexible sealing mechanism through its cover design. The cover can be flexibly opened for maintenance and closed for protection, creating a dynamic barrier against water exposure while maintaining electrical safety.
2Power
If the battery pack has a high capacity to provide sufficient power, then the power supply is adequate for the electric outboard motor, but the power supply apparatus becomes difficult to carry and move
Solution Approach 1:
Wheels are attached to the waterproof box to counteract the weight of the high-capacity battery pack. This mechanical aid provides mobility compensation, allowing the heavy apparatus to be easily moved and positioned despite its substantial weight from the battery.
3Reliability
If the power supply apparatus is sealed to prevent water entry, then waterproof protection is improved, but gas generated from the battery pack cannot be discharged
Solution Approach 1:
A waterproof filter is installed in the waterproof box that utilizes porous material properties. This filter allows gas molecules to pass through while blocking liquid water molecules, enabling gas discharge while maintaining waterproof protection. The porous structure provides selective permeability based on molecular size and properties.
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 solution provides a waterproof and easily movable power supply apparatus, preventing electrical failures and facilitating the safe and efficient operation of electric outboard motors by ensuring the battery pack's durability and ease of carriage.
Implementation Method 1
a filter apparatus that does not allow liquid to pass therethrough but allows gas to pass therethrough is provided in the ventilation hole
Data Source
AI summary
A power supply apparatus that supplies electric power to an external electrical device through a cable is provided with a battery pack, and a battery pack case that houses the battery pack. The battery pack case includes a case body having an opening through which the battery pack to be taken in and out, a cover member that liquid-tightly closes the opening of the case body, in which at least one of the case body and the cover member is formed with a ventilation hole so as to penetrate therethrough, and a filter apparatus that does not allow liquid to pass therethrough but allows gas to pass therethrough is provided in the ventilation hole.