Shared Vehicle Control Module Power Supply Architecture
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Solution Overview
Problem
Conventional control modules in vehicles require individual power conversion configurations, leading to increased complexity, cost, and reduced reliability, hindering miniaturization and economic efficiency.
Innovation Solution
A system power supply that distributes power to multiple control modules through a shared 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 provide reliable and efficient power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each control module configures independent working power supply, then power supply reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent merges the power supply functions of multiple control modules into a single centralized working power supply unit. This unit converts input power (e.g., 12V vehicle battery power) to standardized working voltages (e.g., 5V, 3.3V) and distributes them through a shared power supply line to multiple control modules. This eliminates the need for each module to have independent power conversion circuits, reducing overall system complexity while maintaining reliability through centralized protection mechanisms.
Solution Approach 2:
The centralized working power supply unit serves multiple control modules simultaneously, performing universal power conversion and distribution functions. It can supply power to different types of control modules with different power requirements through a standardized interface, making the power supply system multi-functional and adaptable to various module configurations.
2Reliability
If each control module configures independent working power supply, then power supply independence is improved, but manufacturing cost increases
Solution Approach 1:
By combining power supply functions into a single unit, the patent reduces the total number of power conversion circuits needed in the system. This consolidation lowers component count, reduces assembly complexity, and decreases manufacturing costs while maintaining adequate power supply independence through proper circuit design and protection mechanisms.
3Adaptability or versatility
If each control module configures independent working power supply, then power conversion capability is improved, but module size increases
Solution Approach 1:
The patent extracts the power conversion function from individual control modules and places it in a separate centralized working power supply unit. This allows control modules to be minimized in size since they only need simple power reception circuits rather than full power conversion systems. The power conversion capability is preserved at the system level through the dedicated power supply unit.
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 cost reduction while enhancing the reliability and integration of control systems by eliminating the need for separate power supplies in each module.
Implementation Method 1
The working power supply unit is an isolated DC/DC power source
Implementation Method 2
the output end of each working power supply unit is connected to a control power supply line after being connected in series with a diode
Data Source
AI summary
A system power supply including an input power supply, a working power supply unit, a plurality of control modules, and a wiring harness is provided. 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.