Emergency DC Power Supply with Directional Current Interruption
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Solution Overview
Problem
Emergency energy supply devices for DC voltage circuits face safety risks due to potential overcharging of batteries or capacitors, which can lead to hydrogen gas formation and explosive mixtures, especially when decoupling components fail under exceptionally high voltages.
Innovation Solution
Incorporating a directional current measuring device and an interrupting device to detect and prevent charging current flows, allowing only discharging currents to pass, thereby eliminating the need for traditional decoupling components and ensuring safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If decoupling components are used to prevent charging current flow, then battery overcharging is prevented, but the system complexity increases and cost increases
Solution Approach 1:
The patent extracts the essential function of decoupling components (preventing reverse charging current) and implements it through a simpler arrangement: connecting the positive terminal of the storage battery directly to the positive potential connection and the negative terminal directly to the negative potential connection, eliminating the need for complex decoupling circuits while maintaining protection functionality
Solution Approach 2:
The patent makes the connections multi-functional by designing them to simultaneously serve as both charging current paths and protection mechanisms. The directional nature of the connections allows them to automatically prevent reverse current flow without requiring additional dedicated decoupling components, thereby reducing system complexity while maintaining reliability
2Reliability
If decoupling components are used to prevent charging current flow, then battery safety is improved, but the manufacturing cost increases
Solution Approach 1:
The patent removes expensive decoupling components from the circuit while retaining the essential safety function through simplified direct connections, thereby reducing manufacturing costs without compromising battery protection capability
Solution Approach 2:
The patent employs simple, low-cost connection elements that can be easily manufactured and replaced if needed, replacing expensive decoupling components with basic conductive connections that achieve the same protective function at a fraction of the cost
3Object-affected harmful factors
If decoupling components fail under high voltage, then charging current can flow causing hydrogen formation, but the system lacks adequate protection
Solution Approach 1:
The patent implements preliminary protective action by designing the connection architecture to inherently prevent reverse charging current flow from the outset, rather than relying on decoupling components that may fail under high voltage stress. The directional connection structure proactively blocks harmful current paths before they can cause hydrogen formation
Solution Approach 2:
The patent provides beforehand cushioning against high voltage failures by creating redundant safe current paths through the direct terminal connections, ensuring that even if one connection path experiences stress, the inherent directional blocking prevents reverse current flow that could lead to hydrogen gas formation and explosion hazards
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
The solution effectively prevents harmful charging currents, reducing the risk of overcharging and hydrogen gas formation, enhancing safety and cost-effectiveness by allowing for controlled charging and retrofittable designs.
Implementation Method 1
a directional current measuring device to detect charging current flows
Implementation Method 2
an interrupting device to stop the flow of charging current
Data Source
AI summary
Described and illustrated is an emergency power supply device for the emergency power supply of a DC circuit (1), wherein the DC circuit (1) has a first potential connection (2) and a second potential connection (3), with an energy storage device (4), wherein the energy storage device (4) has a positive pole (5) and a negative pole (6) and wherein one of the poles (4, 5) is connected to the first potential connection (2) via a first connection (7) and the other pole is connected to the second potential connection (3) via a second connection (8).An emergency power supply device that ensures high safety and is cost-effective is realized according to the invention in that at least one of the connections (7, 8) has a directional current measuring device (10) and at least one of the connections (7, 8) has an interrupting device, wherein a charging current flow can be measured by the directional current measuring device (10), a charging current flow can be interrupted by the interrupting device and the interrupting device can be controlled depending on the measured charging current flow.