Mobile Battery Converter for On-Site Work Vehicle Charging
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Solution Overview
Problem
Conventional charging systems for electric work vehicles, such as electric tractors, require the vehicle to be moved to a fixed external power supply location for charging, which is inconvenient and inefficient, especially when the battery charge is low during work operations.
Innovation Solution
A charging system that includes a converter capable of connecting to both the electric work vehicle's battery and an electric automobile's battery, converting and transmitting power from the automobile's battery to the work vehicle's battery, allowing on-site charging without the need to move the vehicle to a fixed power supply.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electric work vehicle is moved to a fixed external power supply location for charging, then the battery can be charged, but the operational efficiency is reduced and troublesome work is required
Solution Approach 1:
The converter acts as an intermediary device that enables power transfer from the electric automobile's battery to the work vehicle's battery. This mediator eliminates the need for the work vehicle to travel to fixed charging infrastructure, as the converter can be positioned at the work location and facilitate direct battery-to-battery charging through conductive connection
Solution Approach 2:
Instead of moving the work vehicle to the power supply location (conventional approach), the system inverts the approach by bringing the power supply (electric automobile with converter) to the work vehicle's location. This reversal of movement responsibility resolves the contradiction by maintaining charging capability while preserving operational efficiency
2Power
If the electric work vehicle operates in a field with large driving load, then work capability is improved, but battery charge is consumed faster
Solution Approach 1:
The system enables preliminary charging actions by allowing the electric automobile to serve as a mobile charging station. When the work vehicle's battery charge becomes low during high-power operations, the converter can be connected to the electric automobile's battery to recharge the work vehicle's battery on-site, extending the duration of action without reducing work capability
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 convenient and efficient charging of the electric work vehicle's battery by using the electric automobile's battery, eliminating the need for the vehicle to be moved to a fixed charging location, thus reducing operational hassle and improving charging efficiency.
Implementation Method 1
a first AC/DC converter configured to convert the first electric power to alternating-current electric power
Implementation Method 2
a transformer configured to transform a first voltage of the alternating-current electric power obtained by the first AC/DC converter to a second voltage receivable by the first battery
Implementation Method 3
a second AD/DC converter configured to convert the alternating-current electric power transformed by the transformer to the second electric power, the second electric power being direct-current power
Data Source
AI summary
A charging system comprises: a first battery mountable in an electric work vehicle; a second battery mountable in an electric automobile; and a converter capable of conductively connecting to the first battery and the second battery, and also capable of converting first electric power from the second battery to second electric power receivable by the first battery and transmitting the second electric power to the first battery.