Distribution Board Switching Circuit for Vehicle Power Mode Selection
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Solution Overview
Problem
Existing power supply systems require complex and cumbersome operations to switch between normal and emergency modes, involving multiple switches distributed inside and outside the house, making it difficult for users to understand and operate these modes effectively.
Innovation Solution
A power supply system with a vehicle and a distribution board that includes a user-operated operation unit for selecting between interconnection and disconnection modes, along with a switching circuit that coordinates power and communication lines to simplify mode switching, allowing all necessary switches to be operated from within the house.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple switches are distributed inside and outside the house for mode switching, then the power supply system can achieve proper control of power flow, but the operation becomes troublesome and difficult for users to understand
Solution Approach 1:
The patent combines multiple distributed switches (selector switch at connector portion, selector switch at charging/discharging station, and selector switch at distribution board) into a single integrated switching circuit within the distribution board. This merging allows all switching operations to be performed from one location, eliminating the need for users to physically move between different locations while maintaining proper power flow control.
Solution Approach 2:
The patent introduces a communication line as an intermediary that transmits control signals between the vehicle and the distribution board. This allows the switching circuit to coordinate power and communication lines, enabling centralized control while maintaining the distributed architecture's functional requirements.
2Reliability
If multiple switches are arranged in a distributed manner, then the system can control power flow between vehicle and external components, but the user has to go out of and come back to inside the house to operate these switches
Solution Approach 1:
The patent merges all switching functions into a single location (the distribution board inside the house), eliminating the need for users to physically travel outside the house to operate switches. The switching circuit integrates the functionality of previously distributed switches, allowing all operations to be completed from one convenient location.
Solution Approach 2:
The patent implements preliminary action by pre-configuring the switching circuit within the distribution board to handle all mode switching requirements. The communication line is established in advance to transmit control signals, so when the user needs to switch modes, all necessary control actions are already in place and can be executed immediately without additional travel or setup.
3Reliability
If a plurality of switches are used for mode switching, then the system can properly manage charging and discharging operations, but it makes it difficult for users to understand the operations
Solution Approach 1:
The patent merges multiple switches into a single integrated switching circuit that handles all charging and discharging management functions. This consolidation reduces the apparent complexity for users while maintaining the sophisticated control logic needed for proper power management. The switching circuit internally coordinates multiple functions through the communication line interface.
Solution Approach 2:
The switching circuit is designed with multi-functionality to handle various modes (charging, discharging, emergency power supply) through a single interface. This universal design allows one device to perform multiple functions that previously required separate switches, making the system easier to understand while maintaining comprehensive control capabilities.
Data Source
AI summary
A power supply system includes: a vehicle; a power cable; and a distribution board configured to be capable of exchanging electric power with an electric power system and the power cable. The distribution board includes: an operation unit operated by a user to select one of a first mode in which the electric power system and the vehicle are interconnected with each other and a second mode in which the electric power system is disconnected from the vehicle and electric power is exchanged between the vehicle and a house; and a switching circuit that switches a source of supply for a receptacle, to which an electrical load is connected, between the electric power system and the power cable and switches the communication line, in accordance with the operation on the operation unit.