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.

公开(公告)号：US20250046954A1

公开(公告)日：2025-02-06

申请号：US18383577

申请日：2023-10-25

Applicant: Apple Inc.

Inventor： Yanning Song ,  Jinjun Shi

IPC: H01M50/491 ,  H01M10/04 ,  H01M50/449

Abstract: A separator of a battery cell includes first pores disposed through a first segment of a thickness of the separator, and second pores disposed through a second segment of the thickness. In an unwound state of the separator, a first cross-sectional area of the first pores differs in size from a second cross-sectional area of the second pores by a first amount. In a wound state of the separator, the first cross-sectional area is substantially equal in size to the second cross-sectional area, or the first cross-sectional area differs in size from the second cross-sectional area by a second amount that is less than the first amount.

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：US20210091420A1

公开(公告)日：2021-03-25

申请号：US16577476

申请日：2019-09-20

Applicant: Apple Inc.

Inventor： Dapeng Wang ,  Jinjun Shi ,  Norberto N. Ison

IPC: H01M10/42 ,  H01M10/44 ,  H01M10/48 ,  H02J7/00

Abstract: Battery packs according to embodiments of the present technology may include a first battery cell including a lithium-containing material. The first battery cell may be configured to operate in a voltage window extending to or above about 4 V. The battery packs may include a second battery cell electrically coupled in parallel with the first battery cell. The second battery cell may be configured to operate in a voltage window maintained at or below about 4.0 V. The battery packs may also include a controller configured to receive a measured terminal voltage from the first battery cell. The controller may be configured to determine whether to disconnect the second battery cell from the first battery cell based on the measured terminal voltage of the first battery cell.

公开(公告)号：US20230088564A1

公开(公告)日：2023-03-23

申请号：US17841285

申请日：2022-06-15

Applicant: Apple Inc.

Inventor： Jinjun Shi ,  Brian K. Shiu ,  Katharine R. Chemelewski

IPC: H01M50/534 ,  H01M50/103 ,  H01M50/533 ,  H01M50/586 ,  H01M50/593 ,  H01M50/474 ,  H01M50/119 ,  H01M50/581 ,  H01M50/176

Abstract: The disclosed technology relates to a looped tab for a battery cell. The looped tab may extend from a set of layers. The looped tab may comprise a first portion adjacent to the set of layers, and a second portion adjacent to an inner sidewall of the enclosure. At least a portion of the first portion and at least a portion of the second portion comprise a covered portion. The covered portion comprises a metal surface and an oxide coating covering the metal surface. The oxide coating is configured to prevent contact between a layer in the set of layers or the inner sidewall of the enclosure and the metal surface.

公开(公告)号：US11296363B2

公开(公告)日：2022-04-05

申请号：US16577476

申请日：2019-09-20

Applicant: Apple Inc.

Inventor： Dapeng Wang ,  Jinjun Shi ,  Norberto N. Ison

IPC: H01M10/42 ,  H01M10/44 ,  H02J7/00 ,  H01M10/48

Abstract: Battery packs according to embodiments of the present technology may include a first battery cell including a lithium-containing material. The first battery cell may be configured to operate in a voltage window extending to or above about 4 V. The battery packs may include a second battery cell electrically coupled in parallel with the first battery cell. The second battery cell may be configured to operate in a voltage window maintained at or below about 4.0 V. The battery packs may also include a controller configured to receive a measured terminal voltage from the first battery cell. The controller may be configured to determine whether to disconnect the second battery cell from the first battery cell based on the measured terminal voltage of the first 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：US20230087851A1

公开(公告)日：2023-03-23

申请号：US17841277

申请日：2022-06-15

Applicant: Apple Inc.

Inventor： Jinjun Shi ,  Brian K. Shiu ,  Katharine R. Chemelewski

IPC: H01M50/533 ,  H01M50/103 ,  H01M50/119 ,  H01M50/547 ,  H01M50/593 ,  H01M50/124

Abstract: The disclosed technology relates to a looped tab for a battery cell. The looped tab may extend from a set of layers. The looped tab may comprise a first portion adjacent to the set of layers and a second portion adjacent to an inner sidewall of the enclosure. The first portion may comprise a covered portion, the covered portion comprising a metal surface and an oxide coating covering the metal surface, the oxide coating configured to prevent contact between a layer in the set of layers or the enclosure and the metal surface of the covered portion.