What are the ways of wireless charging technology
Information from:internet Published on:2022-03-02
1. Electromagnetic induction The alternating current with a certain frequency in the primary coil generates a certain current in the secondary coil through electromagnetic feeling, so as to transfer energy from the transmission end to the connecting end. At present, the most common charging treatment plan selects electromagnetic feeling. In fact, the electromagnetic feeling treatment plan does not have much secret in the completion of the technology. BYD, a local company in China, applied for the patent of non-contact sensory charger as early as December 2005, and used the electromagnetic feeling technology.
2. Magnetic resonance It is composed of an energy transmitting device and an energy receiving device. When the two devices are adjusted to the same frequency, or resonate at a specific frequency, they can exchange energy with each other. It is a technology currently being studied. The research team led by Marin soljacic, a physics teacher at the Massachusetts Institute of Technology (MIT), cheated the technology to light a 60 watt bulb two meters away, And named it WiTricity. The coil diameter used in this test reaches 50cm, which cannot be commercialized. If the coil size is to be reduced, the connecting pipe power will naturally fall.
3. Radio wave type This is a relatively mature technology, which is similar to the ore radio used in the early stage. It is mainly composed of microwave transmitting device and microwave receiving device. It can capture the radio wave energy bouncing back from the wall and maintain a stable DC voltage while adjusting with the load. This method only requires a transmitter installed on the wall plug and a "mosquito type" receiver installed on any low-voltage product.
