公开(公告)号：US20250087774A1

公开(公告)日：2025-03-13

申请号：US18960188

申请日：2024-11-26

Applicant: Apple Inc.

Inventor： Loren L. Roy ,  Qingzhi Guo ,  Premanand Ramadass ,  Hyungook Yoon ,  Jinjun Shi

IPC: H01M10/44 ,  H01M4/70 ,  H01M10/04 ,  H01M10/0587 ,  H01M10/42 ,  H01M50/103 ,  H01M50/112 ,  H01M50/534 ,  H01M50/538

Abstract: The disclosed technology relates to battery packs having battery cells of different designs or capacities with an imbalance in the charging and/or discharging current supplied to and provided by each jelly roll due to differences in capacity specific impedance between the battery cells of a battery pack. The battery pack includes at least a first and second battery cell connected in parallel, with a thickness of an active layer and/or current collector of a battery cell having an altered thickness to reduce an impedance of the battery cell.

公开(公告)号：US11742512B2

公开(公告)日：2023-08-29

申请号：US16739488

申请日：2020-01-10

Applicant: Apple Inc.

Inventor： Loren L. Roy ,  Qingzhi Guo ,  Premanand Ramadass ,  Hyungook Yoon ,  Jinjun Shi

IPC: H01M10/04 ,  H01M10/0587 ,  H01M10/44 ,  H01M50/531 ,  H01M50/247 ,  H01M50/209 ,  H01M10/42

CPC classification number: H01M10/0431 ,  H01M10/0587 ,  H01M10/44 ,  H01M50/209 ,  H01M50/247 ,  H01M50/531 ,  H01M2010/4292

Abstract: Battery packs having jelly roll battery cells of different capacities may have an imbalance in the charging and/or discharging current supplied to and provided by each jelly roll due to differences in capacity specific impedance between the battery cells of the battery pack. A C-rate (i.e., current relative to rated capacity) of a lower capacity first battery cell and a higher capacity second battery cell connected in parallel may be balanced by repositioning and/or increasing the number of cathode tabs and anode tabs of the second jelly roll battery cell to reduce an impedance of the second battery cell.

公开(公告)号：US12191460B2

公开(公告)日：2025-01-07

申请号：US17744002

申请日：2022-05-13

Applicant: Apple Inc.

Inventor： Loren L. Roy ,  Qingzhi Guo ,  Premanand Ramadass ,  Hyungook Yoon ,  Jinjun Shi

IPC: H01M10/44 ,  H01M4/70 ,  H01M10/04 ,  H01M10/0587 ,  H01M10/42 ,  H01M50/103 ,  H01M50/112 ,  H01M50/538 ,  H01M50/534

Abstract: Battery packs having jelly roll battery cells of different designs or capacities may have an imbalance in the charging and/or discharging current supplied to and provided by each jelly roll due to differences in capacity specific impedance between the battery cells of the battery pack. A C-rate (i.e., current relative to rated capacity) of a first and second battery cell connected in parallel may be balanced by altering properties of an active layer and/or a thickness of a current collector of the second battery cell to reduce an impedance of the second battery cell.

公开(公告)号：US20210074958A1

公开(公告)日：2021-03-11

申请号：US16883959

申请日：2020-05-26

Applicant: Apple Inc.

Inventor： David M. Pelletier ,  Brad G. Boozer ,  Christopher M. Werner ,  Tianren Xu ,  Brian K. Shiu ,  Simone M. Missirian ,  Haran Balaram ,  Abhishek P. Shiwalkar ,  Shravan Bharadwaj ,  Alexander Manosov ,  Matthew S. Theobald ,  Huan Huang ,  Tyler S. Bushnell ,  Katharine R. Chemelewski ,  Premanand Ramadass ,  Yanning Song ,  Christopher R. Pasma

IPC: H01M2/02 ,  H01M10/48 ,  H01M10/42

Abstract: This application relates to a battery system for reducing spacing between components in an electronic device. The battery system includes a housing surrounding an electrode assembly and a connection module. The housing is rigid or semi-rigid and connected to a common ground. The battery system can be positioned in the electronic device to contact components without damaging the components. In some embodiments, the battery system can be used as a structural element in the electronic component.

公开(公告)号：US20230268545A1

公开(公告)日：2023-08-24

申请号：US18310779

申请日：2023-05-02

Applicant: Apple Inc.

Inventor： Loren L. Roy ,  Qingzhi Guo ,  Premanand Ramadass ,  Hyungook Yoon ,  Jinjun Shi

IPC: H01M10/04 ,  H01M10/0587 ,  H01M10/44 ,  H01M50/531 ,  H01M50/247 ,  H01M50/209

CPC classification number: H01M10/0431 ,  H01M10/0587 ,  H01M10/44 ,  H01M50/531 ,  H01M50/247 ,  H01M50/209 ,  H01M2010/4292

Abstract: The disclosed technology relates to balanced battery packs having battery cells of different capacities with higher capacity battery cells having a reduced impedance compared to lower capacity battery cells in the battery pack. The battery pack includes at least a first and second battery cell connected in parallel, with the second battery cell having a higher capacity than a capacity of the first battery cell. Tabs extending from electrodes of the second battery cell are disposed near a center of the electrodes to reduce an impedance of the second battery cell.

公开(公告)号：US20220399576A1

公开(公告)日：2022-12-15

申请号：US17744002

申请日：2022-05-13

Applicant: Apple Inc.

Inventor： Loren L. Roy ,  Qingzhi Guo ,  Premanand Ramadass ,  Hyungook Yoon ,  Jinjun Shi

IPC: H01M10/0587 ,  H01M10/42

Abstract: Battery packs having jelly roll battery cells of different designs or capacities may have an imbalance in the charging and/or discharging current supplied to and provided by each jelly roll due to differences in capacity specific impedance between the battery cells of the battery pack. A C-rate (i.e., current relative to rated capacity) of a first and second battery cell connected in parallel may be balanced by altering properties of an active layer and/or a thickness of a current collector of the second battery cell to reduce an impedance of the second battery cell.

公开(公告)号：US20240106090A1

公开(公告)日：2024-03-28

申请号：US18186787

申请日：2023-03-20

Applicant: Apple Inc.

Inventor： Jinjun Shi ,  Ghazal Shoorideh ,  Liang Guo ,  Lin Ma ,  Premanand Ramadass ,  Rui Guo ,  Yao Lu

IPC: H01M50/538 ,  H01M50/536

CPC classification number: H01M50/538 ,  H01M50/536

Abstract: An electrode cell manufacturing process may include forming an electrode sheet including an electrode material and an active material. A first plurality of electrode tab windows may be defined in the active material to expose first portions of the electrode material. The process may also include slitting the electrode sheet along a first line that orthogonally intersects the first plurality of electrode tab windows to define a first electrode strip including a first set of electrodes and a second electrode strip including a second set of electrodes.

公开(公告)号：US11489211B2

公开(公告)日：2022-11-01

申请号：US16739457

申请日：2020-01-10

Applicant: Apple Inc.

Inventor： Loren L. Roy ,  Qingzhi Guo ,  Premanand Ramadass ,  Hyungook Yoon ,  Jinjun Shi

IPC: H01M4/00 ,  H01M10/44 ,  H01M50/538 ,  H01M4/70 ,  H01M10/04

Abstract: Battery packs having jelly roll battery cells of different designs or capacities may have an imbalance in the charging and/or discharging current supplied to and provided by each jelly roll due to differences in capacity specific impedance between the battery cells of the battery pack. A C-rate (i.e., current relative to rated capacity) of a first and second battery cell connected in parallel may be balanced by altering properties of an active layer and/or a thickness of a current collector of the second battery cell to reduce an impedance of the second battery cell.