公开(公告)号：US20220209311A1

公开(公告)日：2022-06-30

申请号：US17528351

申请日：2021-11-17

Applicant: Medtronic, Inc.

Inventor： Hui Ye ,  Mark E. Viste ,  Gang Ji ,  Gordon O. Munns ,  Gaurav Jain ,  Laura E. McCalla

IPC: H01M10/42 ,  G01R31/367 ,  G01R31/3842 ,  H01M10/44 ,  G01R31/387

Abstract: At least one electrochemical cell is charged to a predetermined voltage of the electrochemical cell using an external power source. A charging current of the at least one electrochemical cell is monitored. An increase in the charging current is detected at the predetermined voltage of the at least one electrochemical cell. It is determined that the at least one electrochemical cell is in danger of experiencing a performance decrease based on the detected increase in the charging current.

公开(公告)号：US20250138092A1

公开(公告)日：2025-05-01

申请号：US18925415

申请日：2024-10-24

Applicant: Medtronic, Inc.

Inventor： Gang Ji

IPC: G01R31/36 ,  G01R31/378 ,  G01R31/382 ,  G01R31/389 ,  G01R31/392

Abstract: The present disclosure provides a battery health management device including at least one sensor coupled to a battery, and a controller coupled to the at least one sensor and including a processor coupled to a memory comprising instructions, the processor configured to execute the instructions to receive a plurality of battery health input values associated with a battery health parameter over a predetermined period of time, determine an updated battery health value based on the plurality of battery health input values, determine that each battery health input value included in the plurality of battery health input values meets a predetermined trend condition, calculate a difference value, determine that the difference value is less than or equal to a predetermined upper bound battery health value and greater than or equal to a predetermined lower bound battery health value, and update the reference battery health value.

公开(公告)号：US12265132B2

公开(公告)日：2025-04-01

申请号：US17547611

申请日：2021-12-10

Applicant: Medtronic, Inc.

Inventor： Joel B. Artmann ,  Brian Douglas Kuhnley ,  Gang Ji

IPC: H01M10/44 ,  G01R31/382 ,  G01R31/392 ,  H01M10/46 ,  H01M10/42

Abstract: A method for battery management, the method including determining an amount of charge Qchg delivered to the battery during a portion of a charging cycle. The method can also include measuring state of charge (SoCfull) of the battery subsequent to the charging cycle, and determining an amount of charge Qdsg produced by the battery during a discharging cycle of the battery to a depth of discharge (DoD) threshold. The method can also include measuring state of charge (SoCempty) of the battery subsequent to discharging the battery. The method can include determining total battery capacity based on the values determined in previous operations. Apparatuses and systems for battery management are also described.

公开(公告)号：US20220196747A1

公开(公告)日：2022-06-23

申请号：US17547611

申请日：2021-12-10

Applicant: Medtronic, Inc.

Inventor： Joel B. Artmann ,  Brian Douglas Kuhnley ,  Gang Ji

IPC: G01R31/382 ,  G01R31/392 ,  H01M10/44

Abstract: A method for battery management, the method including determining an amount of charge Qchg delivered to the battery during a portion of a charging cycle. The method can also include measuring state of charge (SoCfull) of the battery subsequent to the charging cycle, and determining an amount of charge Qdsg produced by the battery during a discharging cycle of the battery to a depth of discharge (DoD) threshold. The method can also include measuring state of charge (SoCempty) of the battery subsequent to discharging the battery. The method can include determining total battery capacity based on the values determined in previous operations. Apparatuses and systems for battery management are also described.

公开(公告)号：US20220196746A1

公开(公告)日：2022-06-23

申请号：US17528437

申请日：2021-11-17

Applicant: Medtronic, Inc.

Inventor： Bo Zhang ,  Joel B. Artmann ,  Gang Ji

IPC: G01R31/371 ,  G01R31/3835 ,  G01R31/364 ,  H02J7/00

Abstract: An apparatus for providing an accurate estimate of remaining runtime of a battery is described. The apparatus comprises a fuel gauge and processing circuitry coupled to the fuel gauge. The processing circuitry can receive an indicator of remaining battery capacity from the fuel gauge. The processing circuitry can calculate remaining battery energy based on the remaining battery capacity and further based on an amount of power expected to be used by a battery load during an expected alarm time. The processing circuitry can calculate remaining runtime based on the remaining battery energy. A method and system are also described.

公开(公告)号：US20240094305A1

公开(公告)日：2024-03-21

申请号：US17933912

申请日：2022-09-21

Applicant: Medtronic, Inc.

Inventor： Gang Ji

IPC: G01R31/396 ,  G01R31/367 ,  G01R31/3842 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00

CPC classification number: G01R31/396 ,  G01R31/367 ,  G01R31/3842 ,  H01M10/425 ,  H01M10/486 ,  H02J7/0048 ,  H01M2010/4271 ,  H01M2220/30

Abstract: Example devices and techniques are described herein for determining a relative state-of-charge of a battery. An example device includes memory, a battery, a temperature sensor and processing circuitry coupled to the memory and the temperature sensor. The temperature sensor may be configured to sense a battery temperature. The processing circuitry may be configured to estimate an end-of-discharge state-of-charge of the battery. The processing circuitry may be configured to estimate a remaining capacity of the battery. The processing circuitry may be configured to estimate a full charge capacity of the battery. The processing circuitry may be configured to estimate a relative state-of-charge of the battery and generate a representation of the estimate of the relative state-of-charge of the battery for output.

公开(公告)号：US20220209312A1

公开(公告)日：2022-06-30

申请号：US17528424

申请日：2021-11-17

Applicant: Medtronic, Inc.

Inventor： Gang Ji ,  Craig L. Schmidt ,  Joel B. Artmann ,  Bo Zhang

IPC: H01M10/42 ,  G01R31/367 ,  G01R31/3842 ,  H01M10/44 ,  G01R31/387

Abstract: A capacity of at least one electrochemical cell is monitored. A current fade rate us determined based on the capacity. The current fade rate is compared to at least one previously determined fade rate. A fault counter is adjusted based on the comparison.

公开(公告)号：US20220200302A1

公开(公告)日：2022-06-23

申请号：US17528411

申请日：2021-11-17

Applicant: Medtronic, Inc.

Inventor： Bo Zhang ,  Joel B. Artmann ,  Gang Ji

IPC: H02J7/00

Abstract: A method for battery management, the method including determining whether to perform a capacity update of a battery. The method can also include responsive to determining to perform the capacity update, determining existing depth-of-discharge (DoD) of the battery. The method can also include performing a discharge operation or a charge operation based on whether existing DoD is below a threshold. The method can include performing the capacity update subsequent to the discharge or charge operation. Apparatuses and systems for battery management are also described.

公开(公告)号：US11181586B2

公开(公告)日：2021-11-23

申请号：US16743769

申请日：2020-01-15

Applicant: Medtronic, Inc.

Inventor： Gang Ji ,  Craig L. Schmidt ,  Gaurav Jain

IPC: G01R31/389 ,  G01R31/392 ,  G01R31/367 ,  G01R31/36

Abstract: In some examples, a host device includes a battery capacity and/or battery resistance predictive model. The host device may predict a battery capacity value and/or batter resistance value of a rechargeable battery and compare the predicted battery capacity and/or predicted battery resistance to a battery capacity value and/or battery resistance value stored in a fuel gauge. The host device may overwrite the battery capacity value and/or battery resistance value stored in the fuel gauge with the predicted battery capacity value and/or the predicted battery resistance value if the difference is greater than a maximum error threshold.

公开(公告)号：US20210215766A1

公开(公告)日：2021-07-15

申请号：US16743769

申请日：2020-01-15

Applicant: Medtronic, Inc.

Inventor： Gang Ji ,  Craig L. Schmidt ,  Gaurav Jain

IPC: G01R31/389 ,  G01R31/36 ,  G01R31/367 ,  G01R31/392

Abstract: In some examples, a host device includes a battery capacity and/or battery resistance predictive model. The host device may predict a battery capacity value and/or batter resistance value of a rechargeable battery and compare the predicted battery capacity and/or predicted battery resistance to a battery capacity value and/or battery resistance value stored in a fuel gauge. The host device may overwrite the battery capacity value and/or battery resistance value stored in the fuel gauge with the predicted battery capacity value and/or the predicted battery resistance value if the difference is greater than a maximum error threshold.