Vehicle Electrical Load Diode Signal Coupling
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Solution Overview
Problem
Existing electrical load systems in motor vehicles face challenges in efficiently switching between different vehicle electrical systems, particularly when galvanically separated or low leakage current interfaces are used, as they require individual activation signals and complex bus system coupling, leading to undesired energy consumption and leakage currents.
Innovation Solution
The use of a diode element to couple vehicle electrical system parts allows for the simple transfer of activation signals between systems, minimizing leakage currents and eliminating the need for separate bus system coupling, with a second energy supply unit switching from an idle to an active state upon receiving the signal, and a control unit managing energy supply and signal generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If galvanically separated or low leakage current interfaces are used between vehicle electrical system parts, then energy consumption is reduced and leakage currents are minimized, but individual activation signals and complex bus system coupling are required, increasing device complexity
Solution Approach 1:
A diode element is introduced as an intermediary component between the first and second vehicle electrical system parts. This diode enables unidirectional signal transmission from the first system part to the second system part without requiring galvanic connection, thus maintaining low leakage current characteristics while simplifying the activation signal transmission mechanism and eliminating the need for complex bus system coupling.
2Reliability
If individual activation signals are sent to each vehicle electrical system part, then reliable activation is achieved, but the bus system must be coupled to all parts, increasing device complexity
Solution Approach 1:
The diode element serves as a dedicated intermediary for activation signal transmission between specific system parts. Instead of coupling all system parts to a common bus system, the diode provides a direct unidirectional signal path from the first system part to the second system part, ensuring reliable activation while minimizing the number of connections required.
Solution Approach 2:
The activation signal transmission is segmented into dedicated unidirectional paths using diode elements rather than using a single common bus system for all communications. This segmentation allows each activation signal path to be independently optimized and reduces the overall complexity of the bus system coupling architecture.
3Adaptability or versatility
If multiple vehicle electrical systems are used to supply different electrical loads, then energy supply flexibility is improved, but switching between systems requires complex control mechanisms
Solution Approach 1:
The diode element enables the second vehicle electrical system part to automatically detect and respond to activation signals from the first system part without requiring complex switching control mechanisms. The unidirectional nature of the diode inherently prevents reverse current flow, eliminating the need for complex bidirectional control logic and allowing the system to self-regulate the switching between electrical systems.
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 enables efficient energy supply to electrical loads from multiple vehicle systems while preventing leakage currents, reducing energy consumption, and simplifying the activation process, thereby conserving battery life and minimizing manufacturing costs.
Implementation Method 1
a diode element (4), by means of which the first vehicle electrical system part (2a) is coupled electrically to the second vehicle electrical system part (2b) for the transfer of an activation signal
Data Source
AI summary
An electrical load, for example and electrical component and/or an electronic component, of a motor vehicle may include a first electrical system part and a second electrical system part for supplying the electrical load with electrical energy from a first vehicle electrical system and a second vehicle electrical system, respectively. The first vehicle electrical system part may be electrically coupled to a diode element for transferring an activation signal to an electrical energy supply unit provided in the second electrical system part. The electrical energy supply unit may be switched between an active state where a supply voltage is provided to the electrical load and an idle state where the supply voltage to the electrical load is suspended.