V2V DC Charging Interface for Generator-Direct Hybrid Vehicle Rescue
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Solution Overview
Problem
New energy vehicles face limitations in driving range due to current power battery technology and lack of convenient charging infrastructure, necessitating an emergency charging method for safe and convenient travel.
Innovation Solution
A V2V DC charging system that allows plug-in hybrid vehicles to charge directly from a fuel-powered generator without using the power battery, utilizing a charging connection device, discharging vehicle, and charging vehicle with specific controllers, relays, and communication protocols to simulate a charging pile and manage power transfer efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If new energy vehicles use power battery technology, then driving range is limited, but charging infrastructure coverage is insufficient
Solution Approach 1:
The patent introduces a charging connection device as an intermediary component that enables direct DC power transfer between vehicles. This mediator includes a discharging gun head, charging gun head, high voltage cable, and control module, allowing power to be transferred without traditional charging infrastructure
Solution Approach 2:
The system enables vehicles to serve each other's charging needs through V2V DC charging. A discharging vehicle with sufficient power can directly charge a charging vehicle that needs power, creating a self-sufficient system that doesn't rely on external charging infrastructure
2Loss of energy
If V2V DC charging uses generator directly without on-board charger, then conversion efficiency improves, but system complexity increases
Solution Approach 1:
The patent extracts the charging function from the traditional on-board charger and relocates it to the charging connection device. The on-board charger is eliminated entirely, and its charging function is performed by the external charging connection device with generator direct coupling
Solution Approach 2:
The charging connection device serves multiple functions: it acts as a power transfer interface, a control unit for handshake protocols, and a simulation of charging pile functionality. This multi-functional design consolidates what would otherwise require separate components
3Adaptability or versatility
If charging connection device simulates charging pile, then compatibility improves, but communication protocol complexity increases
Solution Approach 1:
The charging connection device copies the functionality and communication interface of a standard charging pile. It simulates the charging pile's handshake protocol and parameter configuration, allowing the vehicle to interact with the V2V system as if connecting to traditional infrastructure
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
Enables remote reinforcement charging and improves conversion efficiency by allowing direct charging from a fuel-powered generator, reducing development costs and enhancing versatility without the need for an on-board charger with reverse output.
Implementation Method 1
the discharging vehicle is configured to provide power through an engine to drive a generator to generate electricity to charge a power battery of the charging vehicle
Data Source
Figure 1
AI summary
A system for plug-in hybrid electric vehicle V2V DC charging is provided, the system includes: a charging connection device, a discharging vehicle and a charging vehicle. The charging connection device is configured to connect the discharging vehicle and the charging vehicle and wake up the discharging vehicle first. The discharging vehicle is configured to send a maximum output capability of the discharging vehicle signal and a discharge ready signal to the charging connection device. The charging connection device is configured to wake up the charging vehicle based on the discharge ready signal. The charging connection device is configured to simulate a charging pile to perform charging handshake and charging parameter configuration with the charging vehicle according to a preset standard. After charging vehicle is ready, discharging vehicle provides power through an engine to drive a generator to generate electricity to charge a power battery of the charging vehicle.