Vehicle Power Supply Control with Split Controllers and Current Cutoff
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Solution Overview
Problem
Existing power supply control devices for vehicles lack flexibility in adapting to different loads, making it difficult to easily change components according to varying load requirements.
Innovation Solution
A power supply control device with a controller and instructor on separate substrates, allowing for easy component modification, includes a load switch and circuit switch to manage current flow, with a processing unit that monitors current values and switches off the load or circuit switch if current exceeds a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the power supply control device uses a fixed integrated design, then the device structure is simple, but it is difficult to adapt to different load requirements
Solution Approach 1:
The power supply control device is divided into separate modules: a controller unit and an instructor unit, each with specific functions. This segmentation allows the device to adapt to different loads by configuring appropriate components in each module without redesigning the entire system, thus improving adaptability while maintaining manageable complexity.
Solution Approach 2:
The controller and instructor are designed as universal components that can work with various load types. The controller includes a load switch that can control different loads, and the instructor can provide instructions for multiple operation modes, enabling the device to serve multiple functions across different应用场景.
2Adaptability or versatility
If the controller and instructor are integrated on the same substrate, then the device complexity is reduced, but the flexibility to change components according to load requirements is limited
Solution Approach 1:
The controller and instructor are implemented on separate substrates, allowing independent selection and replacement of each component based on specific load requirements. This physical segmentation enables flexible configuration without increasing overall device complexity, as each substrate can be optimized independently.
3Reliability
If the load switch is controlled without current monitoring, then the control operation is simple, but the safety and reliability of power supply control is reduced
Solution Approach 1:
The instructor monitors the operation state and current conditions, then provides feedback instructions to the controller to adjust the load switch accordingly. This feedback mechanism ensures reliable and safe power supply control by continuously adapting to actual operating conditions without requiring complex control logic in the load switch itself.
Data Source
AI summary
A power supply control device for a vehicle controls power supply to a first load. A first controller is formed on a first substrate and controls power supply to the first load. A second controller is formed on a second substrate that is different from the first substrate, and instructs the first controller to perform an operation regarding power supply. The first controller and the second controller include a first switch and a circuit switch, respectively. The first switch and the circuit switch are provided on a current path of a current flowing via the first load. The second controller provides an instruction to switch the first switch on or off.