Battery Switching Assembly for Independent Charge-Discharge Cutoff
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Solution Overview
Problem
Existing electrical energy storage systems lack efficient and safe methods to manage charging and discharging currents, especially in critical operating states, and are limited by the availability of compatible voltage sources for charging.
Innovation Solution
A switching assembly with antiserially connected semiconductor switching elements allows independent interruption of charging and discharging currents, enabling safe energy conservation and operation at various voltages by connecting energy storage units in parallel or series, and integrating with voltage sources of different outputs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If semiconductor switching elements are used instead of mechanical switches, then switching dynamics and durability are improved, but the ability to independently interrupt charging and discharging currents in critical states is compromised
Solution Approach 1:
The switching assembly is divided into multiple independent switching units (first, second, third, fourth switching units), each capable of independently controlling current flow. The antiserial connection of semiconductor switching elements within these units enables separate control of charging and discharging currents, resolving the contradiction by segmenting the control function across multiple components while maintaining fast switching performance.
2Device complexity
If energy storage units are connected in fixed circuitry, then system simplicity is maintained, but adaptability to different voltages and charging stations is reduced
Solution Approach 1:
The switching assembly enables dynamic reconfiguration of energy storage units between series and parallel connections through controlled switching of the switching units. This dynamic topology change allows the system to adapt to different voltage requirements of charging stations while maintaining a relatively simple physical circuit structure, thus resolving the contradiction between complexity and adaptability.
Data Source
AI summary
A switching assembly for an electrical energy storage system having a first energy storage unit and a second energy storage unit, each having a first pole terminal and a second pole terminal, comprising:at least a first output and a second output for electrically conductive connection to at least one electrical component,a first switching unit arranged between the first pole terminal of the first energy storage unit and the first output,a second switching unit arranged between the second pole terminal of the first energy storage unit and the second output,a third switching unit arranged between the first pole terminal of the second energy storage unit and the first output,a fourth switching unit arranged between the second pole terminal of the second energy storage unit and the second output,a fifth switching unit arranged between the second pole terminal of the first energy storage unit and the first pole terminal of the second energy storage unit,wherein the first switching unit is connected to the third switching unit,wherein the second switching unit is connected to the fourth switching unit,wherein at least the first and the third switching unit and/or the second and the fourth switching unit or the first and the fourth switching unit comprise two semiconductor switching elements arranged so as to be connected to one another in an antiserial manner.