Universal Battery Interface for Electric Mowers
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Solution Overview
Problem
Users of electric wheeled apparatuses and electric power tools often have multiple battery packs that are not fully utilized, as they require dedicated chargers and are not interchangeable, leading to inefficiency and unnecessary duplication of battery packs and chargers.
Innovation Solution
An electric wheeled apparatus design that incorporates a battery interface capable of removably receiving battery packs from electric power tools, allowing these packs to be used as a power source without the need for dedicated packs or chargers, and featuring an electric circuit unit that connects multiple packs in parallel or series to optimize power supply based on usage needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated battery pack is used for each electric wheeled apparatus, then the power supply reliability is improved, but the device complexity and the number of battery packs required increases
Solution Approach 1:
The battery pack is designed with a universal interface that can be used across multiple different electric wheeled apparatuses. The battery pack includes terminals that can electrically connect to different apparatus types, and the apparatuses are equipped with corresponding connection interfaces. This allows one battery pack to serve multiple functions and be used with various devices, reducing the total number of battery packs needed while maintaining reliable power supply.
2Reliability
If a dedicated charger is used for each battery pack type, then the charging reliability is improved, but the loss of time and ease of operation deteriorates
Solution Approach 1:
The charger is designed with a universal charging interface that can charge different types of battery packs. The charger includes a connection interface that can electrically connect to various battery pack types, and the battery packs are equipped with corresponding terminals. This allows a single charger to serve multiple battery pack types, eliminating the need for multiple dedicated chargers and reducing the time spent managing different charging devices.
3Adaptability or versatility
If battery packs from electric power tools are used in electric wheeled apparatuses, then the adaptability and ease of operation improve, but the electrical connection reliability may worsen
Solution Approach 1:
The electrical connection system is designed with nested interfaces where the battery pack terminals are inserted into corresponding connection interfaces on the electric wheeled apparatus. The connection interface includes contact elements that engage with the battery pack terminals, creating a reliable electrical connection. This nested structure ensures proper alignment and secure contact, maintaining electrical connection reliability while enabling compatibility with different battery pack types.
Data Source
AI summary
An electric wheeled apparatus comprises a main body, at least one wheel supported by the main body in a rotatable manner; an electric motor configured to apply torque to the at least one wheel, a battery interface configured to removably receive at least one battery pack which is originally designed as a power source of an electric power tool, and an electric circuit unit configured to electrically connect the at least one battery pack attached to the battery interface with the electric motor.