公开(公告)号：US20220103015A1

公开(公告)日：2022-03-31

申请号：US17386542

申请日：2021-07-28

Applicant: Apple Inc.

Inventor： Michael B. Nussbaum ,  Katherine I. Pregler ,  Liang Chen ,  Todd K. Moyer ,  Bingyao Sun

IPC: H02J50/12 ,  H02J50/80

Abstract: A wireless power transfer system can include a wireless power transmitter (PTx) and a wireless power receiver (PRx). The PTx can include a transmit coil driven by an inverter configured to receive an input DC voltage and provide an output AC voltage as a plurality of bursts. The PRx can include a receiver coil magnetically coupled to the transmit coil such that the bursts induce a corresponding AC voltage and a rectifier configured to receive the AC voltage and output a DC voltage to a load. The PRx can also include burst request pulse generation circuitry configured to operate the rectifier so as to deliver a burst request pulse to the PTx via magnetic coupling between coils. The PTx can further include inverter control circuitry configured to sense the burst request pulse and, in response thereto, trigger the inverter to deliver an AC voltage burst.

公开(公告)号：US12021181B2

公开(公告)日：2024-06-25

申请号：US17018102

申请日：2020-09-11

Applicant: Apple Inc.

Inventor： Katherine I. Pregler ,  Kyle Tse ,  Samantha K. Young ,  Jason W. Brinsfield ,  Mei Zhang ,  Charles Greenlee ,  Kevin R. Richardson ,  Susheel Teja Gogineni ,  Ethan L. Huwe ,  Connor R. Duke ,  Michael B. Nussbaum ,  Shawn G. Fink ,  Kirill Kalinichev

IPC: H01M10/04 ,  H01M50/169 ,  H01M50/598

CPC classification number: H01M10/0431 ,  H01M50/169 ,  H01M50/598

Abstract: The disclosed technology relates to a battery utilizing an indicator to orient an unopposed portion of a cathode or anode with respect to a battery can, and a tag to generate an electromagnetic field to mitigate or eliminate an electromagnetic field generated by the unopposed portion of the cathode or anode. The battery includes a wound set of layers including a cathode, an anode, and a separator; a can housing the wound set of layers; a lid disposed atop of the can to enclose the wound set of layers within the can; and a tag coupled to the lid. An unopposed portion of the cathode or anode generates a first electromagnetic field. The tag generates a second electromagnetic field to oppose the first electromagnetic field.