High-speed full-duplex wireless energy data synchronous transmission system based on frequency division multiplexing
A wireless energy and data synchronization technology, applied in transmission systems, near-field transmission systems, electrical components, etc., can solve problems such as inability to realize full-duplex communication, and achieve the effects of facilitating transmission, large transmission gain, and eliminating crosstalk
A wireless energy and data synchronization technology, applied in transmission systems, near-field transmission systems, electrical components, etc., can solve problems such as inability to realize full-duplex communication, and achieve the effects of facilitating transmission, large transmission gain, and eliminating crosstalk
CN110690765AActive Publication Date: 2020-01-14HARBIN INST OF TECH
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[0063] Specific examples: such as figure 1 As shown, this embodiment includes a power transmission circuit, a primary side data transceiver circuit and a secondary side data transceiver circuit;
[0064] The power transmission circuit includes a full-bridge inverter, a primary-side LCC compensation structure, a loosely coupled transformer, a secondary-side LCC compensation structure, a full-bridge rectifier, and a filter capacitor; such as figure 1 shown. where U in is the DC input voltage, Q 1 ~Q 4 Four MOSFETs form a full-bridge inverter, which converts the input DC voltage U in Converted to high frequency AC voltage. L f1 、C f1 、C p They are the primary side series inductor, parallel capacitor and series capacitor respectively, forming the primary side LCC compensation structure. L p , L s are the self-inductance of the primary side and secondary side coils of the loosely coupled transformer, respectively, and k is the coupling coefficient of the primary side and...
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The invention provides a high-speed full-duplex wireless energy data synchronous transmission system based on frequency division multiplexing, and belongs to the technical field of wireless power transmission, aiming at solving the problem that the conventional wireless energy data synchronous transmission technology cannot realize full-duplex communication. The system comprises a power transmission circuit which is used for transmitting electric energy from a primary side to a secondary side through a loose coupling transformer with a tap and then outputting the electric energy to a load; a primary side data transmit-receive circuit and a secondary side data transmit-receive circuit. The data transmit-receive circuits in the invention employ the frequency division multiplexing technology,so that power and data are transmitted through an induction coil with a tap by using carriers with different frequencies, and the data carrier frequency is far higher than the power carrier frequencyso as to eliminate crosstalk between the data and power transmission; the duplexers in the data transmit-receive circuits isolate data receiving and transmitting carriers on the same side to achievefull-duplex data transmission; the position of the coil tap is optimized, so that the transmission gain of bidirectional data carriers is maximum, and transmission of the data carriers is facilitated.
Description
technical field [0001] The invention relates to a wireless energy data synchronous transmission system, which belongs to the technical field of wireless energy transmission. Background technique [0002] Wireless power transmission technology is more and more used in various occasions because of its convenience, flexibility, safety and other characteristics. In order to realize functions such as feedback control, load identification, status monitoring, etc., reliable two-way data communication is required. At the same time, many applications also need to provide a two-way communication interface to achieve the necessary functions. However, the wireless power transmission system is an electrical noise environment, which limits the traditional communication methods such as radio frequency communication technology. [0003] Several technologies based on electromagnetic induction to transmit power and data have been proposed at this stage. For example, in some applications po...
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Patent Timeline
14 Jan 2020
Publication
CN110690765A
- IPC
- H02J50/10; H04B5/00
- CPC
- H02J50/10; H04B5/26; H04B5/79; Y02D30/70
- Inventors
- 姚友素; 程海松