Power Switching Assembly for Corded Multi-Voltage Tool Compatibility
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Solution Overview
Problem
Existing power tools require different battery packs with specific rated voltages, and existing dual-voltage battery packs are inconvenient to use due to integrated voltage regulation structures that necessitate different external plugs for voltage selection, especially when connected via power cords.
Innovation Solution
A power switching device that allows for switching between positions to adjust the coupling form of plugs, enabling the output of different voltages and compatibility with various power supply devices, using a switching member that moves between positions to connect plugs with different polarities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different external plugs are used for voltage selection in dual-voltage battery packs, then voltage switching capability is achieved, but ease of operation deteriorates when connected via power cords
Solution Approach 1:
The patent extracts the voltage selection function from the battery pack itself and relocates it to the power tool. The battery pack maintains a single integrated voltage regulation structure, while the power tool incorporates a switching member that can selectively connect to different voltage output terminals. This separation resolves the contradiction by eliminating the need for multiple battery pack plugs while maintaining voltage switching capability through an internal switching mechanism in the power tool.
Solution Approach 2:
The patent introduces a switching member as an intermediary component within the power tool that mediates between the single battery pack connection and multiple voltage output requirements. This switching member can be positioned to connect different internal circuit pathways, enabling voltage selection without requiring the user to change external plugs. The intermediary switching mechanism resolves the contradiction by providing automated voltage selection capability.
2Device complexity
If integrated voltage regulation structure is used in battery pack, then device complexity is reduced, but adaptability deteriorates for tools with power cord connections
Solution Approach 1:
The patent segments the voltage regulation function between two components: the battery pack maintains a simple integrated structure with single voltage output, while the power tool contains the voltage selection and switching circuitry. This segmentation allows the battery pack to remain simple and low-cost while the power tool handles the complexity of voltage adaptation, resolving the contradiction between device complexity and adaptability.
Solution Approach 2:
The patent introduces a dynamic switching mechanism in the power tool that can change its internal connectivity based on the required voltage. The switching member can move between different positions to establish different electrical connections, enabling the system to adapt dynamically between single-voltage and dual-voltage modes. This dynamic capability allows the integrated battery pack structure to work with tools requiring different voltage configurations.
3Adaptability or versatility
If multiple battery packs with different rated voltages are used, then adaptability to different power tools is achieved, but device complexity and cost increase
Solution Approach 1:
The patent makes the battery pack universal by designing it with a single integrated voltage regulation structure that can supply multiple voltage levels. Instead of requiring different battery packs for different voltage tools, the single battery pack can output multiple voltages through internal regulation. This universality eliminates the need for users to maintain multiple battery packs, resolving the contradiction between adaptability and device complexity.
Solution Approach 2:
The patent merges the voltage regulation functionality into the battery pack itself, combining multiple voltage output capabilities within a single integrated unit. Rather than having separate battery packs for different voltages, the single battery pack incorporates the voltage selection and regulation circuitry, consolidating what would have been multiple separate devices into one unified system.
Data Source
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AI summary
A power switching device, an electric energy storage system and an electric tool system are provided. The power switching device includes a plug connected to a power supply device and including an output terminal; and a power switching assembly connected to the plug and including a power switching member, the switching member is used for switching a coupling form of the plug. The power switching assembly further includes a control member for controlling the power switching assembly to move between different switching positions. The control member includes a switching button, and the switching position of the power switching assembly is switched by pressing the switching button.