Energy Supply Device Current Control for Electric Processing Tools
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Solution Overview
Problem
Electric processing tools face challenges in safely maximizing the summation current from multiple energy sources connected in series or parallel, risking power limits exceeding individual energy source capabilities.
Innovation Solution
An energy supply device with an open-loop or closed-loop control unit measures individual currents of energy sources and adjusts the summation current to ensure safe operation within permitted ranges, using current measurement units like shunt resistors or Hall sensors, and includes voltage and temperature measurement for plausibility checks and protective circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple energy sources are connected in series or parallel to maximize summation current, then power output is improved, but risk of exceeding individual energy source power limits increases
Solution Approach 1:
The patent implements a control unit that continuously monitors the current output of each energy source and adjusts the overall power output accordingly. The control unit receives feedback signals from current sensors measuring individual energy source currents, compares these against predefined safety thresholds, and dynamically regulates the summation current to prevent any single energy source from exceeding its power limits while maximizing total power output.
2Power
If multiple energy sources are used to increase power output, then device capability is improved, but device complexity increases
Solution Approach 1:
The control unit serves multiple functions simultaneously: it monitors individual energy source currents, regulates the summation current, ensures safe operation within power limits, and maximizes total power output. This multi-functional approach consolidates what could be multiple separate control systems into a single integrated unit, reducing overall system complexity despite the presence of multiple energy sources.
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 configuration allows for higher output current and maximum power while preventing individual energy sources from operating outside their limits, ensuring safe and efficient energy supply.
Implementation Method 1
current measurement units like shunt resistors or Hall sensors
Implementation Method 2
current measurement units like shunt resistors or Hall sensors
Implementation Method 3
voltage and temperature measurement for plausibility checks
Implementation Method 4
voltage and temperature measurement for plausibility checks
Data Source
AI summary
An electric processing tool includes an energy supply device and an open-loop or closed-loop control unit. The energy supply device includes at least two energy sources which are interconnected, each in a series circuit with an electronic component for applying the logical operator “OR” to the individual current of the electronic component in question, to form a common star point, such that a resulting total current for supplying the electric processing tool results. At least a subset of the energy sources, in particular each energy source, is assigned a current-measuring unit for measuring the individual current of the energy source in question. The open-loop or closed-loop control unit is configured to adapt the total current to the measured individual currents.