Bi-stable primary constant current magnetic induction coupling wireless charging device and using method thereof
A wireless charging and bistable technology, applied in the direction of circuit devices, electrical components, etc., can solve the problems of low conversion efficiency, poor heat dissipation conditions, narrow parameter adaptation range, etc., and achieve the goal of improving conversion efficiency, simplifying structure and reducing complexity Effect
Active Publication Date: 2018-11-23
XIDIAN UNIV
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[0007] In order to achieve the above purpose, the present invention provides a bistable primary side constant current magnetic induction coupling wireless charging device and its use method, which solves the problems of low conversion efficiency, poor heat dissipation conditions and narrow parameter adaptation range of wireless charging devices in the prior art
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[0078] The application of the present invention in fast wireless charging of 48V / 60Ah large-scale accumulator requires constant current 20A charging, 56V charging stops, and the average charging power reaches 1000W.
[0079] The 220V mains is rectified and filtered to obtain 300V DC to supply power for the H-bridge driver, such as figure 2As shown, the output terminal of the H-bridge driver is connected to the transmitting coil 3 after passing through the ±100A / 5V Hall current sensor, and the output terminal of the Hall sensor is connected to the positive input terminal of comparator 1 and the negative input terminal of comparator 2 respectively. Hall current sensor linearly converts -100A~+100A current into -5V~+5V voltage, and takes the positive threshold voltage source U according to the current required by the battery th+ =3V, corresponding to the positive peak threshold current +60A; take the negative threshold voltage U th- =-3V, corresponding to negative peak threshol...
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The invention discloses a bi-stable primary constant current magnetic induction coupling wireless charging device and a using method thereof. The bi-stable primary constant current magnetic inductioncoupling wireless charging device is composed of a transmitting end and a receiving end, wherein the transmitting end is configured to provide alternating current AC constant current; and the receiving end is configured to receive the AC constant current of the inductive transmitting end, and rectify the AC constant current to obtain a DC charging current. The invention completes the timing flipping and the oscillation at the same time while realizing the constant current wireless charging to save the independent oscillator link, has the natural short circuit current limiting protection function, and simplifies the structure of the primary side driving and protection circuit.
Description
technical field [0001] The invention belongs to the technical field of wireless charging and power electronics, and relates to a bistable primary-side constant current magnetic induction coupling wireless charging device and a use method thereof. Background technique [0002] In recent years, with the rapid development of wireless power supply technology, many wireless charging applications have been promoted, such as: charging of consumer electronics products such as mobile phones and tablets, wireless charging of medical equipment, and charging of smart wearable devices. Among various wireless power supply methods, the Inductive Coupled Power Transmission (ICPT) technology is widely used in short-distance and low-power electronic devices due to its advantages of non-radiation characteristics, electrical isolation, and ability to cross non-metallic media. It is especially widely used in charging. The principle of magnetic induction coupling wireless power supply is to use ...
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IPC IPC(8): H02J50/10
CPCH02J50/10
Inventor 谢楷刘少伟权磊刘艳李谦
Owner XIDIAN UNIV