公开(公告)号：WO2017027174A1

公开(公告)日：2017-02-16

申请号：PCT/US2016/042792

申请日：2016-07-18

Applicant: QUALCOMM INCORPORATED

Inventor： STANISLAWSKI, Wojciech Grzegorz ,  VON NOVAK, William Henry, III

IPC: H02J5/00 ,  H02J7/02 ,  H02J50/12 ,  H02J50/80

CPC classification number: H02J50/12 ,  H02J5/005 ,  H02J7/025 ,  H02J50/80

Abstract: An apparatus for wireless power transfer comprises a coupler having a first resistance and configured to generate a voltage under influence of a time-varying magnetic field generated by a wireless power transmitter. The apparatus comprises a rectifier circuit configured to rectify the voltage. The apparatus comprises a switching circuit coupled to an output of the rectifier circuit and having a first state and a second state. A first amount of power dissipated by at least the first resistance and the rectifier circuit in the first state and a second amount of power dissipated by at least the first resistance and the rectifier circuit in the second state. The apparatus comprises a controller configured to toggle the switching circuit between the first state and the second state. A difference between the second and first amounts of power is differentiable by the wireless power transmitter.

Abstract translation: 一种用于无线功率传输的装置包括具有第一电阻并被配置为在由无线电力发射器产生的时变磁场的影响下产生电压的耦合器。 该装置包括被整流电压的整流电路。 该装置包括耦合到整流器电路的输出并具有第一状态和第二状态的开关电路。 在第一状态下由至少第一电阻和整流电路消耗的第一功率量以及在第二状态下由至少第一电阻和整流电路消耗的第二功率量。 该装置包括控制器，其被配置为在第一状态和第二状态之间切换开关电路。 第二和第一功率之间的差异可由无线电力发射机区分。

公开(公告)号：WO2017035457A1

公开(公告)日：2017-03-02

申请号：PCT/US2016/048946

申请日：2016-08-26

Applicant: QUALCOMM INCORPORATED

Inventor： STANISLAWSKI, Wojciech Grzegorz ,  VON NOVAK, William Henry

IPC: H02J50/12 ,  H02J50/70

CPC classification number: H02J50/70 ,  H02J7/025 ,  H02J50/12

Abstract: An apparatus for wireless power transfer (402) includes: a support member (513) including a charging surface (514) configured to support a power receiving element (42); a power transmitting element (502) configured to generate a magnetic field that can wirelessly transfer power to the power receiving element (42); a metallic shield (504) disposed such that the power transmitting element (502) is disposed between the support member (513) and the metallic shield (504), the metallic shield (504) being configured to inhibit the magnetic field generated by the power transmitting element (502); and ferrite pieces (506) spaced apart from each other and disposed between the power transmitting element (502) and the metallic shield (504) and closer to the metallic shield (504) than to the power transmitting element (502), the ferrite pieces (506) offsetting an effect of the metallic shield (504) on a reactance of the power receiving element (42).

Abstract translation: 一种用于无线电力传送（402）的装置包括：支撑构件（513），包括构造成支撑受电元件（42）的充电表面（514）; 电力传输元件（502），被配置为产生能够将功率无线地传递到所述受电元件（42）的磁场; 设置为使得所述动力传递元件（502）设置在所述支撑构件（513）和所述金属屏蔽（504）之间的金属屏蔽（504），所述金属屏蔽（504）被配置为抑制由所述电力产生的磁场 发射元件（502）; 和铁氧体片（506）彼此间隔开并且设置在电力传输元件（502）和金属屏蔽（504）之间并且比电力传输元件（502）更靠近金属屏蔽（504），铁氧体片 （506）抵消所述金属屏蔽（504）对所述受电元件（42）的电抗的影响。