Resonant Magnetic Battery Charging Antenna Alignment
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Solution Overview
Problem
Conventional electric vehicle power supply systems require time-consuming charging and can cause battery deterioration from frequent fast charging, and existing wireless charging methods are inefficient over long distances or when antennas are misaligned, with unsafe and cumbersome battery replacement processes.
Innovation Solution
An electric machine and power supply system utilizing resonant magnetic fields for non-contact power transfer between antennas, eliminating the need for physical connectors and allowing efficient energy transfer regardless of antenna distance or alignment, enabling safe and easy battery replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional wired charging is used, then charging function is reliable, but charging time is long and battery deteriorates with frequent fast charging
Solution Approach 1:
The patent replaces the mechanical connector system with a wireless electromagnetic induction system. The transmitting antenna and receiving antenna enable contactless power transfer, eliminating the need for physical plug-and-unplug operations. This substitution resolves the contradiction by enabling fast charging without mechanical wear and reducing charging time while maintaining battery health through controlled induction charging.
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary medium for power transfer. The transmitting antenna generates an alternating magnetic field that induces current in the receiving antenna, serving as a non-contact intermediary for energy transfer. This intermediary mechanism enables rapid power transfer without direct electrical contact, reducing charging time while preventing battery deterioration through controlled induction.
2Productivity
If wireless charging by electromagnetic induction is used, then charging speed increases, but transfer efficiency decreases when distance is long or antennas are misaligned
Solution Approach 1:
The patent employs dynamic adjustment of the transmitting antenna's oscillation frequency to match the resonant frequency of the receiving antenna. This dynamic frequency tuning maintains optimal coupling conditions even when distance or alignment varies, thereby preserving high transfer efficiency while achieving fast charging speeds through resonant electromagnetic coupling.
Solution Approach 2:
The patent changes the operating parameters of the transmitting antenna, specifically its oscillation frequency, to achieve resonance with the receiving antenna. By adjusting the frequency parameter to match the natural resonant frequency of the receiving antenna, the system maximizes energy transfer efficiency over varying distances and alignments while maintaining high charging speed.
3Ease of operation
If battery replacement is performed manually with connectors, then battery can be replaced, but process is unsafe and cumbersome
Solution Approach 1:
The patent replaces the mechanical connector system with a wireless electromagnetic induction system. The transmitting antenna and receiving antenna enable contactless power transfer, eliminating the need for physical plug-and-unplug operations. This substitution resolves the contradiction by enabling safe, easy battery replacement without electrical contact, thereby eliminating shock risk while maintaining operational simplicity.
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 efficient, safe, and easy battery replacement by wirelessly transferring power through resonant magnetic fields, reducing energy loss and preventing electrical shocks, while maintaining high transfer efficiency even over long distances and with misaligned antennas.
Implementation Method 1
a first antenna for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source
Implementation Method 2
receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source
Implementation Method 3
a second antenna for generating a second resonant magnetic field by the radio-frequency power
Implementation Method 4
generating a second resonant magnetic field by the radio-frequency power
Implementation Method 5
a third antenna that couples with the second resonant magnetic field generated by the second antenna, thereby transferring the radio-frequency power received by the third antenna to the driving electric motor
Implementation Method 6
couples with the second resonant magnetic field generated by the second antenna, thereby transferring the radio-frequency power
Data Source
AI summary
A battery pack for use in an electric machine, includes a first receiving antenna including a first inductor for receiving electric power from a power supply source located outside the electric machine by coupling with a first resonant magnetic field generated by the power supply source; and a transferring antenna including a second inductor for generating a second resonant magnetic field by the radio-frequency power. A primary surface of the first inductor is located within the battery pack and is parallel to a first plane of the battery pack. A primary surface of the second inductor is located within the battery pack and is parallel to a second plane of the battery pack. The second plane facing the second inductor intersects with the first plane facing the first inductor at an angle of a range of between 45° and 90° including 45° and 90°.