Centralized Working Power Supply for Multi-Module Control Reliability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional control modules in vehicles require individual power conversion configurations, leading to increased complexity, cost, and reduced reliability, hindering miniaturization and integration due to unstable input power and poor electrical environments.
Innovation Solution
A system power supply that distributes working power to multiple control modules through a single power supply line, utilizing an input power supply, working power supply unit, and wiring harness, including isolated DC/DC power sources and protection devices, to simplify power distribution and enhance reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each control module configures its own working power conversion device, then the control module can operate independently, but the device complexity and cost increase
Solution Approach 1:
The patent merges the power conversion functionality from individual control modules into a centralized working power supply unit. This external power supply device provides converted working power to multiple control modules simultaneously, eliminating the need for each module to have its own power conversion device, thus reducing overall system complexity while maintaining reliable power supply.
Solution Approach 2:
The working power supply unit serves multiple control modules with different power requirements through a single device. It can provide different output voltages (such as 5V, 3.3V, 1.8V) to different modules, making the power supply system universal and multi-functional rather than requiring dedicated power conversion for each module.
2Use of energy by moving object
If each control module has its own working power conversion device, then power can be converted locally, but the cost increases
Solution Approach 1:
The patent consolidates multiple power conversion functions into a single working power supply unit, reducing the total number of power conversion devices needed in the system. This merging approach lowers component costs, reduces BOM (bill of materials) expenses, and simplifies manufacturing processes while still providing local power conversion capability through the centralized unit.
Solution Approach 2:
The universal working power supply unit can serve multiple control modules with different voltage requirements, replacing what would otherwise require multiple specialized power conversion devices. This multi-functionality reduces system cost by eliminating redundant components and leveraging economies of scale in the power supply design.
3Reliability
If each control module has its own working power conversion device, then power supply is independent, but the control module miniaturization is hindered
Solution Approach 1:
The patent extracts the power conversion function from within the control modules and places it in an external working power supply unit. This extraction allows control modules to be miniaturized by removing bulky power conversion components, while the centralized power supply unit handles all power conversion needs, maintaining power supply reliability without the size penalty.
4Device complexity
If a centralized working power supply is used, then the device complexity is reduced, but the input power instability affects all modules
Solution Approach 1:
The working power supply unit acts as an intermediary between the unstable input power source (vehicle battery) and the sensitive control modules. It includes protection circuits that detect and respond to input power abnormalities, isolating the control modules from harmful voltage fluctuations, reverse polarity, and other electrical disturbances, thus protecting all modules from input power instability.
Solution Approach 2:
The working power supply unit incorporates protection circuits that prepare for and cushion against potential input power failures before they affect the control modules. These circuits include reverse polarity protection, over-voltage protection, and undervoltage lockout functions that prevent damage from anticipated power anomalies, cushioning the system against harmful effects in advance.
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
Facilitates miniaturization and integration of control modules while reducing costs and improving system reliability by eliminating the need for separate power supplies, enhancing power conversion efficiency and protection.
Implementation Method 1
The working power supply unit is an isolated DC/DC power source
Data Source
Figure 1~2
Figure 3~4
Figure 5
AI summary
The present invention discloses a system power supply, including an input power supply, a working power supply unit, a plurality of control modules and a wiring harness. The wiring harness includes a working power supply line and an input power supply line. An input power supply port of each control module is connected to the input power supply line, and a working power supply port is connected to the working power supply line. The input power supply is connected to the input power supply line, and an output of the working power supply unit is connected to the working power supply line. The present invention uses a working power supply line to provide working power supply to a plurality of control modules, eliminating the traditional operation of configuring an independent working power supply for each control module, thereby realizing a control system with low cost and high reliability, and facilitating the miniaturization and integrated circuitization of the control module.