Reconfigurable Energy Storage Pack for Three-Voltage Tool Platforms
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing power tools require different battery packs with varying voltage platforms, leading to increased costs and wasteful resource utilization due to the need for multiple battery types.
Innovation Solution
An electric energy storage device with four energy units, divided into two modules, capable of providing three output voltages through series-parallel combinations, utilizing in-module and inter-module control parts to switch between parallel and series connections, and a plug system to adapt to different voltage tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different battery packs with different voltage platforms are used for power tools with different rated working voltages, then the power tools can operate at their required voltage levels, but the cost increases and resources are wasted due to needing multiple battery types
Solution Approach 1:
The battery pack is designed with four energy units that can be reconfigured through switching mechanisms to provide multiple voltage outputs (18V, 36V, 54V). This allows a single universal battery pack design to replace multiple specialized battery packs, enabling compatibility across different voltage platforms while reducing the number of battery pack varieties needed.
Solution Approach 2:
The battery pack incorporates dynamic switching mechanisms (parallel switches and series switches) that can reconfigure the connection topology of energy units in real-time. This dynamic reconfiguration allows the battery pack to adapt its output voltage based on the tool's requirements, transforming a static single-voltage design into a multi-voltage adaptable system.
2Adaptability or versatility
If multiple battery packs with different voltage platforms are prepared, then power tools with different rated working voltages can be powered, but the cost increases
Solution Approach 1:
Four individual energy units are merged into a single integrated battery pack structure with shared control circuitry and switching mechanisms. This consolidation allows the battery pack to provide multiple voltage outputs (18V, 36V, 54V) from a unified design, replacing the need for multiple separate battery packs and reducing the total quantity of battery packs required.
3Adaptability or versatility
If a battery pack with fixed connection configuration is used, then the structure is simple, but it cannot provide multiple voltage outputs
Solution Approach 1:
The battery pack employs dynamic switching mechanisms including parallel switches for connecting energy units in parallel and series switches for connecting them in series. These switches are controlled by control circuits that can reconfigure the battery pack's internal topology in real-time, enabling the system to provide multiple voltage outputs (18V, 36V, 54V) while managing the complexity through automated control.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The disclosure provides an energy storage device comprising four energy units with a same rated voltage and a socket, wherein the four energy units are equally divided into two energy modules, and the socket comprises two voltage output terminals respectively connected with a positive electrode and a negative electrode of the electric energy storage device. The socket is further provided with an in-module control part for switching the connection state of two energy units in the energy modules and an inter-module control part for switching the connection state between the two energy modules. The disclosure provides an electric tool system, wherein the electric tool is provided with a plug coupled with a socket. The energy storage device can provide three output voltages, which can be matched with electric tools with different rated voltages, improves the adaptability of the electric energy storage devices, and reduces the cost.