公开(公告)号：US10148101B2

公开(公告)日：2018-12-04

申请号：US15480417

申请日：2017-04-06

Applicant: MEDIATEK Inc.

Inventor： Chih-Yuan Hsu ,  Shih-Ming Chen ,  Jia-You Chuang

IPC: H02J7/00 ,  G01R31/36

Abstract: A battery charging system for charging a battery of a portable device includes: a power supplier, generating a power supplier output voltage and a power supplier output current; and a charging circuit, dynamically updating an over-voltage protection threshold and/or an over-current protection threshold based on a charging current, a battery cell charging voltage and an equivalent impedance of a charge path. The power supplier output current and/or the over-voltage protection threshold and/or the over-current protection threshold are time-varying during the battery is charged. The power supplier performs over-voltage protection and/or over-current protection based on the over-voltage protection threshold and/or the over-current protection threshold from the charging circuit.

公开(公告)号：US20180048166A1

公开(公告)日：2018-02-15

申请号：US15480417

申请日：2017-04-06

Applicant: MEDIATEK Inc.

Inventor： Chih-Yuan Hsu ,  Shih-Ming Chen ,  Jia-You Chuang

IPC: H02J7/00 ,  G01R31/36

CPC classification number: H02J7/0029 ,  G01R31/362 ,  H02J7/007 ,  H02J7/0072 ,  H02J2007/0037 ,  H02J2007/0039

Abstract: A battery charging system for charging a battery of a portable device includes: a power supplier, generating a power supplier output voltage and a power supplier output current; and a charging circuit, dynamically updating an over-voltage protection threshold and/or an over-current protection threshold based on a charging current, a battery cell charging voltage and an equivalent impedance of a charge path. The power supplier output current and/or the over-voltage protection threshold and/or the over-current protection threshold are time-varying during the battery is charged. The power supplier performs over-voltage protection and/or over-current protection based on the over-voltage protection threshold and/or the over-current protection threshold from the charging circuit.

公开(公告)号：US20180026451A1

公开(公告)日：2018-01-25

申请号：US15472235

申请日：2017-03-28

Applicant: MediaTek Inc.

Inventor： Chih-Yuan Hsiao ,  Chien-Tse Fang ,  Wei-Ting Wang ,  Yung-Cheng Huang ,  Jia-You Chuang

IPC: H02J7/00

CPC classification number: H02J7/007 ,  G06F1/206 ,  G06F1/26 ,  H02J7/00 ,  H02J7/0021 ,  H02J7/0068 ,  H02J7/04

Abstract: A mobile device performs thermal management during concurrent battery charging and workload execution based on a thermal headroom. The thermal headroom is an amount of power, in a form of heat, that heat dissipation hardware in the mobile device is estimated to dissipate when the mobile device operates at a target temperature. After the thermal headroom is determined, the mobile device determines a first power allocation to system loading, which is caused by one or more applications running on the mobile device. The first power allocation is subtracted from the thermal headroom to obtain a second power allocation to a charger, which charges a battery module of the mobile device while the one or more application are running. The mobile device then sets an input power limit of the charger based on the second power allocation.

公开(公告)号：US20180011145A1

公开(公告)日：2018-01-11

申请号：US15713696

申请日：2017-09-24

Applicant: MEDIATEK INC.

Inventor： Jui-Chi Wu ,  Jia-You Chuang ,  Tsung-Ju Tsai

IPC: G01R31/36 ,  H01M10/48

CPC classification number: G01R31/387 ,  G01R31/367 ,  G01R31/371 ,  G01R31/374 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/392 ,  H01M10/48 ,  H01M10/482 ,  H02J7/0047 ,  H02J2007/005

Abstract: A method for estimating a battery power percentage of a battery includes: performing a first fuel gauge operation upon the battery; and using the first fuel gauge operation to generate the battery power percentage of the battery by referring to information measured by a second fuel gauge operation performed upon the battery wherein the second fuel gauge operation is different from the first fuel gauge operation.