Vehicle Wiring Branch Control Unit for Voltage Stabilization
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Solution Overview
Problem
Vehicle electrical wiring systems face instability due to voltage drops or spikes, particularly during start procedures, which can impair sensitive components like lighting and steering systems, and existing solutions fail to provide robust and reliable voltage stabilization.
Innovation Solution
A control unit is introduced that manages the exchange of electrical power between multiple wiring system branches, using switching devices and diodes to decouple sensitive components from dynamic consuming units, ensuring stable voltage supply through controlled coupling and decoupling, and employing energy stores like batteries and supercapacitors for efficient energy management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple wiring system branches are connected in a traditional wiring system, then the system can support various electrical consuming units, but voltage drops or spikes occur during start procedures causing instability
Solution Approach 1:
The wiring system is divided into multiple independent branches (first wiring system branch with starter motor, second wiring system branch with sensitive consuming units, third wiring system branch with generator, fourth wiring system branch with energy store). Each branch can be independently controlled and decoupled, allowing sensitive consuming units to be isolated from voltage disturbances during start procedures while maintaining system versatility
2Productivity
If dynamic consuming units like starter motors are activated, then the vehicle can perform start procedures, but heavy voltage drops occur that affect sensitive components
Solution Approach 1:
Sensitive consuming units are extracted from the main wiring system branch and placed in a separate second wiring system branch. This extraction allows the starter motor operation in the first branch to proceed without causing voltage drops to affect the sensitive consuming units, as they are now electrically isolated through the controllable switching devices
Solution Approach 2:
Controllable switching devices (50, 51, 52) act as intermediaries between different wiring system branches. These switching devices control the coupling and decoupling of branches, allowing the system to isolate sensitive consuming units from voltage disturbances during start procedures while maintaining the ability to connect branches when needed
3Ease of operation
If sensitive consuming units are connected to the main wiring system, then the system provides comprehensive power supply, but voltage spikes or drops impair their function
Solution Approach 1:
The wiring system is segmented into separate branches, with sensitive consuming units placed in the second wiring system branch connected to terminal (43). This segmentation allows comprehensive power supply coverage while protecting sensitive units through independent branch control and decoupling capability during voltage disturbances
4Device complexity
If traditional wiring system topology is used, then the system structure is simple, but it fails to provide robust voltage stabilization during start procedures
Solution Approach 1:
Controllable switching devices are introduced as intermediaries between wiring system branches to enable robust voltage stabilization. These switching devices control the coupling and decoupling of branches, allowing the system to isolate sensitive consuming units from voltage disturbances during start procedures while maintaining a relatively simple overall structure
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 stabilizes the power supply during start procedures and dynamic conditions, reducing disturbances to sensitive components and preventing overloading or excessive energy usage, thereby enhancing the reliability and robustness of the vehicle's electrical system.
Implementation Method 1
The first switching device (50) comprises a diode (50') that is connected in parallel with the first switching device (50), and whose forward direction points from the first terminal to the fourth terminal
Implementation Method 2
the second switching device (51) comprises a diode (51') that is connected in parallel with the switching device and whose forward direction points from the third terminal to the fourth terminal
Implementation Method 3
The switching devices are electromechanical switches or semiconductor switches, in particular field effect transistors, bipolar transistors, or IGBTs
Data Source
AI summary
The present disclosure teaches a control unit for the exchange of electrical power between a first, a second, a third, and a fourth wiring system branch of a wiring system of a vehicle. The control unit may include a first switching device, a second switching device, a third switching device, and a first, second, third, and fourth terminal configured for connection to the first, second, third and fourth wiring system branches respectively. The first switching device may be connected between the first terminal and the fourth terminal. The second switching device may be connected between the fourth terminal and the third terminal. The third switching device may be connected between the second terminal and the third terminal.