Reconfigurable Battery Pack Output for Multi-Voltage Power Tools
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Solution Overview
Problem
Existing power tools require different battery packs with fixed output voltages, leading to increased complexity and cost due to the need for multiple battery packs to accommodate different rated working voltages.
Innovation Solution
An electric energy storage device with four energy units, each with a similar voltage, capable of outputting three different voltages through various connection configurations, including parallel and series connections, and a socket with eight independently arranged electrode terminals to interface with different power tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different battery packs with fixed output voltages are prepared for different rated working voltages, then the power tools can operate at their rated voltages, but the operation becomes complicated, cost increases, and resource is wasted
Solution Approach 1:
The battery pack is designed with four energy units that can be connected in different configurations (series, parallel, or combinations) to provide multiple output voltages. This allows a single battery pack to serve multiple power tools with different voltage requirements, eliminating the need for separate battery packs for each voltage level and reducing overall system complexity
Solution Approach 2:
The battery pack incorporates switching circuitry that dynamically reconfigures the connection topology of the four energy units based on the voltage requirements of the connected power tool. The system can switch between series connections for higher voltages and parallel connections for lower voltages, adapting to different tool requirements in real-time
2Reliability
If different battery packs with fixed output voltages are prepared for different rated working voltages, then the power tools can operate at their rated voltages, but the cost increases
Solution Approach 1:
A single battery pack design with reconfigurable energy units replaces the need to manufacture and stock multiple different battery pack types for different voltage requirements. This universal design reduces manufacturing costs by standardizing the energy unit architecture while maintaining compatibility with various power tool voltage specifications
Solution Approach 2:
The invention merges the functionality of multiple specialized battery packs into a single reconfigurable unit. By combining four energy units in one pack that can be arranged in different configurations, it consolidates what would otherwise require four separate battery pack designs, reducing overall manufacturing complexity and cost
3Reliability
If different battery packs with fixed output voltages are prepared for different rated working voltages, then the power tools can operate at their rated voltages, but resource is wasted
Solution Approach 1:
The reconfigurable battery pack provides full adaptability to power tools with different voltage requirements by dynamically changing its internal connection configuration. This eliminates resource waste associated with having specialized battery packs for each voltage level, as one universal pack can serve all voltage needs
Solution Approach 2:
The battery pack's ability to dynamically reconfigure its energy units provides adaptability to match the specific voltage requirements of different power tools. This dynamic adaptability replaces the static, specialized design approach with a flexible system that optimizes resource utilization across different tool types
Data Source
AI summary
An electric energy storage device which includes four energy units with a substantially same voltage value is provided. Each energy unit is provided with a positive electrode and a negative electrode. The electric energy storage device comprises a socket with eight independently arranged electrode terminals that are connected with the four energy units. The disclosure also provides an electric tool system using the electric energy storage device. The electric tool is provided with plugs that may be connected with the four energy units in different states, allowing the electric energy storage device to output multiple voltages.