Energy Storage Coupling Actuation via Time-Multiplexed Control Line
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Solution Overview
Problem
Existing modular energy storage devices face challenges in actuating coupling units quickly, flexibly, and with high accuracy while maintaining energy efficiency and low implementation complexity, especially as the number of energy storage modules increases.
Innovation Solution
An energy supply system with a control device communicating via a control signal line to driver devices, allowing for efficient, precise, and flexible actuation of power electronics in energy storage modules, using a single control line to reduce hardware complexity and enable high update frequencies without requiring special hardware components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate control lines are used to actuate each coupling unit individually, then actuation accuracy and reliability are improved, but hardware complexity and implementation cost increase significantly
Solution Approach 1:
Multiple control signals for different coupling units are merged into a single control line that carries time-multiplexed or frequency-multiplexed signals. The control device sequentially transmits control information to multiple driver circuits through this shared line, eliminating the need for separate dedicated control lines for each coupling unit while maintaining reliable actuation.
Solution Approach 2:
The single control line serves multiple functions by carrying control signals for multiple coupling units and potentially multiple energy storage modules. The control device can address different driver circuits through the same line using addressing schemes or time-division multiplexing, making the control line universal rather than dedicated to a single function.
2Power
If the number of energy storage modules is increased to meet power and energy requirements, then system capacity is improved, but actuation complexity and response time degradation worsen
Solution Approach 1:
The battery system is segmented into multiple energy storage modules, each with its own driver circuit that can be independently controlled. This segmentation allows the system to scale in power capacity while maintaining manageable control complexity, as each module can be addressed and controlled individually through the shared control line using time-multiplexed addressing.
Solution Approach 2:
The control device uses periodic time-multiplexed signaling to actuate multiple coupling units in sequence through the single control line. Each coupling unit receives its control signal at a specific time slot within a periodic cycle, enabling the system to manage multiple modules without requiring simultaneous control signals for all units.
3Reliability
If conventional separate control lines are used for each driver device, then communication reliability is improved, but hardware cost and implementation complexity increase
Solution Approach 1:
Multiple control signal pathways are merged into a single physical control line that uses time-division or frequency-division multiplexing to maintain reliable communication with multiple driver circuits. This merging reduces the number of physical connections required while preserving communication reliability through proper signal timing and addressing protocols.
Data Source
AI summary
The invention relates to an energy supply system having an energy storage device. The energy storage device has a plurality of energy storage modules that are serially connected in at least one energy supply branch, each comprising an energy storage cell module having at least one energy storage cell, and a coupling device having coupling elements configured to selectively switch the energy storage cell module into the respective energy supply branch, or to circumvent same, and comprising a plurality of driver devices, each dedicated to one of the energy storage modules, and coupled to one of the energy storage modules, and which are configured to actuate the coupling elements of the coupling devices according to a driver signal. The energy supply system further comprises a control device, which is coupled to the driver devices by way of a control signal line, and which is configured to emit a control signal to the driver devices by way of the control signal line, which is provided with a physical control signal parameter, into the value of which a control mode for the driver devices is coded. The driver devices are configured to receive the control signal, and to generate the respective driver signal subject to the value of the control signal parameter, and a control mode assignment that can be predetermined.