Dynamic Power Switching With Storage Cells for Variable Voltage Loads

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Solution Overview

Problem

Existing power systems utilizing renewable energy sources face inefficiencies due to unpredictable and variable power and voltage supply, which are exacerbated by the need for battery banks to compensate for these fluctuations, leading to degraded system efficiency.

Innovation Solution

A control switching system with monitor nodes, a control switch, and an electrical power storage cell that dynamically monitors and adjusts voltage supply to loads, using a programmed controller to switch between storage and discharge states, enabling efficient management of power from various sources, including AC and DC sources, and optimizing voltage delivery.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a battery bank is used to compensate for variable power and voltage conditions, then system reliability is improved, but system efficiency is degraded due to considerable charging and recharging time

Engineering Contradiction:
Improvesystem reliabilityVSAvoidsystem efficiency
Core Design Contradiction:
ReliabilityVSLoss of energy

Solution Approach 1:

The battery bank is divided into multiple individual battery cells, each with its own control switch. This segmentation allows the controller to selectively charge and discharge specific cells based on real-time power conditions, reducing overall charging time and improving system efficiency while maintaining reliability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The control switch for each battery cell is dynamically controlled based on real-time monitoring of power conditions. The controller adjusts which cells are charging or discharging according to the instantaneous power availability and load requirements, optimizing both reliability and efficiency by preventing unnecessary charging cycles.

Inventive Principle:
Principle #15Dynamics

2Loss of energy

If dynamic power management is implemented with multiple battery cells and control switches, then system efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvesystem efficiencyVSAvoiddevice complexity
Core Design Contradiction:
Loss of energyVSDevice complexity

Solution Approach 1:

The controller performs multiple functions: it monitors power conditions, controls charging/discharging of multiple battery cells, and manages power distribution to loads. This multi-functionality consolidates what would otherwise require separate systems into a single control unit, improving efficiency without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The system uses identical battery cells with uniform specifications and characteristics. This homogeneity simplifies the control logic and management overhead, as the controller applies the same control strategy to each cell type, reducing the complexity burden that would arise from managing diverse components.

Inventive Principle:
Principle #33Homogeneity

3Speed

If rapid charging and discharging of battery cells is implemented, then system responsiveness is improved, but manufacturing precision requirements increase

Engineering Contradiction:
Improvecharging speedVSAvoidmanufacturing precision
Core Design Contradiction:
SpeedVSManufacturing precision

Solution Approach 1:

The controller charges and discharges only the necessary portion of battery cells at any given time, rather than operating all cells at maximum capacity. This partial action approach achieves rapid response when needed while avoiding the extreme stress and precision requirements that would result from continuously operating all cells at maximum charge/discharge rates.

Inventive Principle:
Principle #16Partial or excessive action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This solution enhances system efficiency by rapidly managing power and voltage fluctuations, achieving energy storage efficiency exceeding 95% and reducing costs through scalable and symmetrical architecture, allowing for real-time dynamic power management.

Implementation Method 1

an electrical power storage cell operatively connected to the power source in one of the switching states for storing voltage, and for discharging the stored voltage to the electrical load in the other of the switching states

Methodology Applied
Scientific EffectElectrical energy storage: Capacitance

Data Source

PatentUS11742682B2Arrangement for and method of dynamically managing electrical power between an electrical power source and an electrical load
Publication Date: 2023.08.29 NEXTEK POWER SYSTEMS INC
  • US11742682B2 patent drawing
  • US11742682B2 patent drawing
  • US11742682B2 patent drawing

AI summary

Electrical power is dynamically managed a power source a load. A control switching system has a plurality of monitor nodes, a control switch having two switching states, and an electrical power storage cell connected to the power source in one of the switching states for storing voltage, and operative for discharging the stored voltage to the electrical load in the other of the switching states. A programmed controller dynamically monitors operating conditions at the monitor nodes during operation of the electrical load and the power source, and switches the control switch between the switching states in response to the monitored operating conditions for supplying a voltage of a desired waveform shape to the electrical load.