High-flux magnetic-separation sheet for changing charging mode
A charging method and high magnetic flux technology, applied in electrical components, circuit devices, etc., can solve the problems of low efficiency, the heat of the magnetic insulation sheet cannot affect the circuit board, and the charger cannot work normally, etc., and achieves good electromagnetic performance, high magnetic flux. , the effect of small magnetic loss
Inactive Publication Date: 2019-12-20
XUZHOU YUANYANG MAGNETIC MATERIAL
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Problems solved by technology
[0003] The current magnetic isolation sheets are all magnetic thin sheets sintered at high temperature, but as the existing wireless communication technology becomes more and more mature, it has become possible to realize long-distance wireless charging, but the existing ferrite isolation The magnetic sheet can no longer meet the requirements, that is, the magnetic isolation sheet cannot achieve high magnetic flux, and provides a circuit for the sympathetic magnetic field of the charger, resulting in low efficiency. In addition, the heat generated by the magnetic isolation sheet cannot affect the circuit board, so that the charger cannot work normally.
Method used
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Embodiment Construction
[0017] The present invention will be further described below in conjunction with the accompanying drawings.
[0018] like figure 1 As shown in the figure, the high-magnetic-flux magnetic shielding sheet for changing the charging mode includes a polymer base layer 1, a magnetic sheet layer and a magnetic shielding layer;
[0019] The polymer base layer 1, the magnetic sheet layer and the magnetic isolation layer are laid sequentially from bottom to top, and the polymer base layer 1 can be PET single-sided adhesive, which is convenient for fixing the magnetic sheet layer on it;
[0020] The magnetic sheet layer includes an upper magnetic layer 22 and a lower magnetic layer 21. The lower end of the upper magnetic layer 22 is provided with a plurality of first concave grooves, and the plurality of first grooves are arranged left and right. The upper end of the lower magnetic layer 21 is provided with a plurality of first grooves. a plurality of concave second grooves, the plurali...
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The invention discloses a high-flux magnetic-separation sheet for changing a charging mode. The high-flux magnetic-separation sheet comprises a polymer base layer, a magnetic sheet layer and a magnetic separation layer; the polymer base layer, the magnetic sheet layer and the magnetic separation layer are orderly laid from bottom to top; the magnetic sheet layer comprises an upper magnetic layer and a lower magnetic layer; multiple upward concave first grooves are formed at a lower end of the upper magnetic layer and arranged at left and right; multiple downward concave second grooves are formed on the upper end of the lower magnetic layer and arranged at left and right, and corresponding to multiple first grooves, thereby forming multiple cavities, wherein nanometer layers are arranged inthe cavities; the magnetic-separation layer comprises a copper plate layer and a graphite layer, and the graphite layer is laid at an upper end of the copper plate layer through double-faced adhesivetape. The high-flux magnetic-separation sheet for changing the charging mode disclosed by the invention is reasonable and simple in structure, good in high magnetic performance and good in heat conducting performance.
Description
technical field [0001] The invention relates to the field of magnetic cores, in particular to a high-magnetic-flux magnetic isolation sheet for changing the charging mode. Background technique [0002] Magnetic isolation sheets are widely used in wireless charging, near field communication (NFC) and radio frequency identification (RFID) technology fields, and can be made into magnetic conductive sheets in wireless chargers, and magnetic isolation sheets in NFC and RFID devices. [0003] The magnetic isolation sheets currently used are all magnetic thin sheets sintered at high temperature, but as the existing wireless communication technology becomes more and more mature, it has become possible to realize long-distance wireless charging, but the existing ferrite isolation The magnetic sheet can no longer meet the requirements, that is, the magnetic isolation sheet cannot achieve high magnetic flux, providing a loop for the sympathetic magnetic field of the charger, resulting ...
Claims
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IPC IPC(8): H02J50/70
CPCH02J50/70
Inventor 刘孝军朱仁胜朱国栋朱国辉
Owner XUZHOU YUANYANG MAGNETIC MATERIAL