公开(公告)号：US11899069B2

公开(公告)日：2024-02-13

申请号：US17193555

申请日：2021-03-05

Applicant: Cummins Inc.

Inventor： Guodong Fan ,  Ruigang Zhang ,  Jordan Loos ,  Aleksey Yezerets

IPC: G01R31/367 ,  G01R31/392 ,  G01R31/36 ,  B60L58/14 ,  G01R31/388 ,  B60L58/26 ,  B60L58/16 ,  G01R31/3842

CPC classification number: G01R31/367 ,  B60L58/14 ,  B60L58/16 ,  B60L58/26 ,  G01R31/3648 ,  G01R31/388 ,  G01R31/3842 ,  G01R31/392

Abstract: A system is provided for performing a power estimation process for an electric vehicle using a controller. The controller estimates an inner state of an energy storage supply of the electric vehicle. The inner state represents a state-of-charge (SOC) and/or a state-of-health (SOH) of the energy storage supply. The controller also estimates an SOC value and/or an SOH value of the energy storage supply based on at least one of: a present current level, a present voltage level, a present temperature, and time-based information. The controller further estimates a bounded SOC value based on the SOC value, a first upper bound, a the first lower bound, and/or estimates a bounded SOH value based on the SOH value, a second upper bound, and a second lower bound. The controller then controls an electrification process of the electric vehicle based on the bounded SOC and/or SOH values.

公开(公告)号：US12130335B2

公开(公告)日：2024-10-29

申请号：US17613631

申请日：2020-06-05

Applicant: Cummins Inc.

Inventor： Guodong Fan

IPC: H02J7/00 ,  B60L3/12 ,  B60L58/16 ,  G01R31/367 ,  G01R31/392

CPC classification number: G01R31/392 ,  B60L3/12 ,  B60L58/16 ,  G01R31/367 ,  B60L2260/44

Abstract: A computer-implemented method for establishing a trained state of health (SOH) estimation model, the method comprising: acquiring a voltage vs. capacity (QV) data of a training battery at a first SOH within a predetermined voltage range during a charging cycle; obtaining an incremental capacity (IC) data based on at least the acquired QV data; extracting an ICA area and an ICA peak from the IC data; inputting the extracted ICA area and the ICA peak into an ICA database; repeating the acquiring, the obtaining, the extracting, and the inputting processes on the training battery at one or more additional SOHs; and establishing the trained SOH estimation model by training and testing a base SOH estimation model based on at least the ICA database using Support Vector Regression; wherein the trained SOH estimation model is configured to be used by a battery management system to monitor the health of a battery.

公开(公告)号：US20210268932A1

公开(公告)日：2021-09-02

申请号：US17321767

申请日：2021-05-17

Applicant: Cummins Inc.

Inventor： Ruigang Zhang ,  Guodong Fan ,  Richard A. Booth

IPC: B60L58/13 ,  B60L50/62

Abstract: A system for determining a state of health (SOH) of an energy storage device comprises a controller configured to be coupled to the energy storage device. The controller is configured to determine a current value drawn by or supplied to the energy storage device over a predefined period of time. In response to the current value not satisfying a current threshold, the controller determines a current gain factor and determines an adjusted current value from the determined current value based on the current gain factor. The controller is configured to determine an estimated SOH of the energy storage device based on the adjusted current value, and indicate the estimated SOH on a user interface.

公开(公告)号：US20210190867A1

公开(公告)日：2021-06-24

申请号：US17193555

申请日：2021-03-05

Applicant: CUMMINS INC.

Inventor： Guodong Fan ,  Ruigang Zhang ,  Jordan Loos ,  Aleksey Yezerets

IPC: G01R31/367 ,  G01R31/392 ,  G01R31/36 ,  G01R31/3842 ,  G01R31/388 ,  B60L58/26 ,  B60L58/16 ,  B60L58/14

Abstract: A system is provided for performing a power estimation process for an electric vehicle using a controller. The controller estimates an inner state of an energy storage supply of the electric vehicle. The inner state represents a state-of-charge (SOC) and/or a state-of-health (SOH) of the energy storage supply. The controller also estimates an SOC value and/or an SOH value of the energy storage supply based on at least one of: a present current level, a present voltage level, a present temperature, and time-based information. The controller further estimates a bounded SOC value based on the SOC value, a first upper bound, a the first lower bound, and/or estimates a bounded SOH value based on the SOH value, a second upper bound, and a second lower bound. The controller then controls an electrification process of the electric vehicle based on the bounded SOC and/or SOH values.

公开(公告)号：US20220229121A1

公开(公告)日：2022-07-21

申请号：US17613631

申请日：2020-06-05

Applicant: Cummins Inc.

Inventor： Guodong Fan

IPC: G01R31/392 ,  G01R31/367

Abstract: A computer-implemented method for establishing a trained state of health (SOH) estimation model, the method comprising: acquiring a voltage vs. capacity (QV) data of a training battery at a first SOH within a predetermined voltage range during a charging cycle; obtaining an incremental capacity (IC) data based on at least the acquired QV data; extracting an ICA area and an ICA peak from the IC data; inputting the extracted ICA area and the ICA peak into an ICA database; repeating the acquiring, the obtaining, the extracting, and the inputting processes on the training battery at one or more additional SOHs; and establishing the trained SOH estimation model by training and testing a base SOH estimation model based on at least the ICA database using Support Vector Regression; wherein the trained SOH estimation model is configured to be used by a battery management system to monitor the health of a battery.

公开(公告)号：US20210311129A1

公开(公告)日：2021-10-07

申请号：US17205330

申请日：2021-03-18

Applicant: Cummins Inc.

Inventor： Aleksey Yezerets ,  Guodong Fan

IPC: G01R31/392 ,  G01R31/385

Abstract: Systems and methods for determining state of health (SOH) of a battery. For example, a method includes conditioning the battery by determining an initial state of charge of the battery; charging the battery from the initial state of charge to a first target state of charge via a predetermined multi-stage charging sequence; and determining SOH of the battery by charging the battery from the first target state of charge to a second target state of charge at an ICA charging rate; acquiring a voltage vs. capacity (QV) data of the battery during charging of the battery from the first target state of charge to the second target state of charge; obtaining an incremental capacity (IC) data based on at least the acquired QV data; pre-processing the IC data; extracting an incremental capacity analysis (ICA) peak from the IC data; and determining the SOH of the battery based upon the ICA peak.

公开(公告)号：US12240349B2

公开(公告)日：2025-03-04

申请号：US17321767

申请日：2021-05-17

Applicant: Cummins Inc.

Inventor： Ruigang Zhang ,  Guodong Fan ,  Richard A. Booth

IPC: B60L58/13 ,  B60L50/62 ,  H01M10/48 ,  H02J7/00

Abstract: A system for determining a state of health (SOH) of an energy storage device comprises a controller configured to be coupled to the energy storage device. The controller is configured to determine a current value drawn by or supplied to the energy storage device over a predefined period of time. In response to the current value not satisfying a current threshold, the controller determines a current gain factor and determines an adjusted current value from the determined current value based on the current gain factor. The controller is configured to determine an estimated SOH of the energy storage device based on the adjusted current value, and indicate the estimated SOH on a user interface.

公开(公告)号：US11703548B2

公开(公告)日：2023-07-18

申请号：US17205330

申请日：2021-03-18

Applicant: Cummins Inc.

Inventor： Aleksey Yezerets ,  Guodong Fan

IPC: G01R31/392 ,  G01R31/385

CPC classification number: G01R31/392 ,  G01R31/385

Abstract: Systems and methods for determining state of health (SOH) of a battery. For example, a method includes conditioning the battery by determining an initial state of charge of the battery; charging the battery from the initial state of charge to a first target state of charge via a predetermined multi-stage charging sequence; and determining SOH of the battery by charging the battery from the first target state of charge to a second target state of charge at an ICA charging rate; acquiring a voltage vs. capacity (QV) data of the battery during charging of the battery from the first target state of charge to the second target state of charge; obtaining an incremental capacity (IC) data based on at least the acquired QV data; pre-processing the IC data; extracting an incremental capacity analysis (ICA) peak from the IC data; and determining the SOH of the battery based upon the ICA peak.