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.

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：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：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.