Vehicle-side Controller for Bidirectional Power Exchange
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Solution Overview
Problem
Conventional power exchange systems between homes and vehicles lack versatility as they require a controller at the home side to function, limiting the ability of vehicles to initiate charge/discharge requests and not functioning without a home-side controller.
Innovation Solution
A power exchange system with a vehicle-side controller that determines the presence of a home-side controller and sets either itself or the home-side controller as a power command center to manage charge/discharge operations, allowing power exchange between the vehicle and home regardless of the home's controller status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a home-side controller is required for power exchange operations, then power distribution control can be achieved, but system versatility deteriorates because the system cannot function without a home-side controller and vehicles cannot initiate charge/discharge requests
Solution Approach 1:
The vehicle-side controller is designed to perform multiple functions: it can act as a power command center when no home-side controller is present, and it can also communicate with home-side controllers when available. This multi-functional design allows the system to operate in both scenarios (with and without home-side controller), thereby improving system versatility while maintaining reliable power distribution control through the appropriate controller depending on the situation
2Adaptability or versatility
If the vehicle-side controller determines controller presence and sets power command center, then system versatility improves, but device complexity increases due to additional determination and setting functions
Solution Approach 1:
The vehicle-side controller autonomously determines whether a home-side controller is present and automatically sets itself or the home-side controller as the power command center without requiring manual intervention. This self-service capability allows the system to adapt to different configurations automatically, improving versatility while the automation of the determination process helps manage the complexity by eliminating manual setup requirements
Data Source
AI summary
A power exchange system for exchanging power between a power supply system of an installation and a battery of a vehicle includes an installation-side charger/discharger, a vehicle-side charger/discharger coupled to the installation-side charger/discharger to exchange the power, and a vehicle-side controller having a determination section and a setting section. The determination section determines whether the installation is equipped with an installation-side controller that controls power distribution in the power supply system. The setting section sets one of the installation-side controller and the vehicle-side controller as a power command center based on a result of determination by the determination section. The power command center commands one of the installation-side charger/discharger and the vehicle-side charger/discharger to charge/discharge the battery based on information of the battery and information of the power supply system.