Method using off-resonance magnetic coupling coil arrays for constructing wireless power supply device
A coil array and wireless power supply technology, which is applied to circuit devices, electrical components, electromagnetic wave systems, etc., can solve the problems of difficult to effectively improve power supply efficiency, increase line loss, and reduce operating frequency, etc., to achieve modular design, Increased power supply capacity and reduced radiation loss
Active Publication Date: 2014-09-17
HANGZHOU DIANZI UNIV
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Problems solved by technology
However, increasing the number of turns of the coil generally leads to an increase in line loss and a reduction in operating frequency, making it difficult to effectively improve power supply efficiency
Method used
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[0019] Such as figure 1 As shown, step 1: Use a good wire to make a single helical coil, and at the two joints of the coil, connect the capacitor Cs in series to one of the joints, or to both joints in series to construct the coupling coil circuit at the power supply end ;
[0020] Step 2: Use a good wire to make a single spiral coil, disconnect the coil from the middle, and connect the capacitor Cd to the coil in series at the opening to construct the coupled coil circuit at the power receiving end, as shown in figure 2 shown;
[0021] Step 3: Connect multiple power supply coupling coil loops in parallel, and at the same time arrange the coils connected in parallel in an array in a plane. The winding orientation of each coil is the same, and the coil axes are perpendicular to the plane to form the power supply terminal. coil array;
[0022] Step 4: Connect multiple coupling coil loops at the power receiving end in series, and arrange the coils connected in series in an ar...
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The invention discloses a method using off-resonance magnetic coupling coil arrays for constructing a wireless power supply device. A wireless power supply device in the prior art is low in power supply efficiency. The method includes: making single coils with non-defective leads, combining capacitor devices, so that power supply end coupling coil loops and receiving end coupling coil loops which are in high-frequency operation are constructed; arraying the power supply end coupling coil loops and the receiving end coupling coil loops, and determining respective array element number of a power supply end coupling coil loop array and a receiving end coupling coil loop array according to the requirements of the wireless supply device on power supply efficiency and power supply capacity; parallelly connecting each power supply end coupling coil loop with a power control unit; serially connecting each receiving end coupling coil loop with a power utilization control unit; and wirelessly transmitting alternating-current electric energy supplied by the power control unit to the power utilization control unit by means of magnetic coupling effect between the power supply end coupling coil loop array and the receiving end coupling coil loop array so that the electric energy is supplied to a terminal load. By the method, fabrication is easy, control and maintenance are convenient, cost is low and power supply efficiency is high.
Description
technical field [0001] The invention relates to a method for wireless power supply, in particular to a method for constructing a wireless power supply device with a non-resonant magnetic coupling coil array. Background technique [0002] The so-called wireless power supply device refers to those power supply devices that provide electric energy for electronic equipment in a wireless manner. The use of wireless power supply not only saves wires and avoids open-wire socket connectors, but also allows powered equipment to have movement characteristics. In some special power supply occasions (such as mobile phones, laptops, etc.), it has special advantages over traditional power supply wire networks. [0003] Wireless power supply devices can be divided into two categories: radiation type and non-radiation type. The radiating wireless power supply device radiates AC waves into free space through the transmitting antenna, and then collects electromagnetic waves of a specific fre...
Claims
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IPC IPC(8): H02J17/00H02J50/10
Inventor 彭亮
Owner HANGZHOU DIANZI UNIV