Dual-Function Coil for Wireless Vehicle Power Distribution
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Solution Overview
Problem
Conventional vehicle power systems for autonomous and electric vehicles become complex and costly due to the increased energy demands and auxiliary load profiles from additional electronic components, requiring more power and transmission wires.
Innovation Solution
A dual-function coil system that wirelessly receives power from an external source to charge vehicle batteries and then transfers power to auxiliary components within the vehicle, reducing the need for wires and cables through a flexible inductive pad with dual functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If conventional vehicle power systems are used to supply power to additional electronic auxiliary components, then the energy consumption and auxiliary load profile increase, but the system complexity and cost increase due to more transmission wires and complex power distribution
Solution Approach 1:
The patent replaces the mechanical wire-based power transmission system with a wireless electromagnetic field-based power transmission system. The coil assembly transmits power wirelessly to auxiliary components, eliminating the need for physical transmission wires and connectors, thereby reducing system complexity while supporting increased energy consumption from additional electronic components
Solution Approach 2:
The coil assembly is designed to perform multiple functions: it can wirelessly transmit power to auxiliary components during vehicle operation and also serve as a receiving coil for wireless charging of the vehicle battery when parked. This multi-functionality reduces the need for separate dedicated charging infrastructure, simplifying the overall power system
2Power
If more auxiliary power and transmission wires are required to supply energy to additional electronic components, then the power supply capability increases, but the placement and distribution becomes increasingly complex and expensive
Solution Approach 1:
The invention replaces the mechanical wire distribution network with a wireless electromagnetic power transmission system. The coil assembly can wirelessly transmit power to multiple auxiliary components simultaneously without requiring physical connection wires, thereby increasing auxiliary power capability while eliminating the complexity of wire placement and distribution
Solution Approach 2:
The system segments the power transmission function from the mechanical connection function. The coil assembly transmits power wirelessly to different auxiliary components independently, allowing each component to receive power without being physically connected through a complex wire distribution network, thus simplifying overall system distribution
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
The dual-mode vehicle power system simplifies power distribution, lowers system size and cost, and enhances efficiency by eliminating the need for bulky cables and connectors, while providing a flexible and efficient wireless charging network.
Implementation Method 1
a coil that, in a first operational mode, receives power wirelessly from an external source
Implementation Method 2
in a second operational mode, the coil receives power from the second battery and wirelessly transfers power from the second battery to an electrical load in the vehicle
Data Source
AI summary
A vehicle power system includes a coil that, in a first operational mode, receives power wirelessly from an external source, a first battery connected to the coil to receive power transferred from the coil while the coil is in the first operational mode, a second battery that receives power from the first battery, and a switch that switches the coil between the first operational mode and a second operational mode in which the coil receives power from the second battery and wirelessly transfers power from the second battery to an electrical load in the vehicle.