Electric Vehicle Power Supply Control Apparatus
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Solution Overview
Problem
The existing control systems for electric vehicles require external equipment to manage power supply and charging, increasing costs and complexity.
Innovation Solution
A control apparatus integrated within the electric vehicle, featuring a power source, drive motor, switch, fitting detection device, and control device that allows independent power supply management without external equipment, including a mode switching device and outward power supply contactor for controlling power supply and stopping operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If external equipment is prepared to output charging/power supply signals, then the vehicle can recognize and perform charging or power generation operations, but the cost for configuring the apparatus increases
Solution Approach 1:
The patent merges the power supply control function with the vehicle's existing start-up switch and control apparatus. The start-up switch serves dual purposes: starting the vehicle and controlling power supply to external equipment. The control apparatus integrates multiple functions including detecting switch operations, determining power supply states, and controlling contactors, eliminating the need for separate external control equipment.
Solution Approach 2:
The start-up switch is designed with multi-functionality, serving both as a vehicle start-up control device and a power supply control device. The control apparatus also performs multiple functions: detecting switch operations, determining whether the plug is connected, controlling the contactor, and managing the power supply state, replacing what would traditionally require separate dedicated equipment.
2Ease of operation
If external equipment is used to manage power supply signals, then charging and power supply operations can be controlled, but the apparatus configuration becomes more complex
Solution Approach 1:
The control apparatus combines the power supply control function with the vehicle's existing start-up control system. The same control apparatus that manages vehicle start-up also manages power supply to external equipment, eliminating the need for separate control circuits and reducing overall system complexity.
Solution Approach 2:
The vehicle's control apparatus autonomously performs power supply control based on its own internal state detection. The control apparatus detects when the start-up switch is operated, determines the power supply state based on plug connection status, and automatically controls the contactor without requiring external equipment or complex signal circuits.
Data Source
AI summary
An ECU selects a power supply mode which controls a power supply to an inverter apparatus, in a case where a fuel cell vehicle is instructed to start-up by an ignition switch and it is detected that a power supply inlet and a power supply connector are fitted together based on voltage of CONNECT signal, and selects a driving mode which controls the driving of the fuel cell vehicle, in a case where the fuel cell vehicle is instructed to start-up by the ignition switch and it is detected that the power supply inlet and the power supply connector are not fitted together based on voltage of CONNECT signal.