公开(公告)号：US10031186B2

公开(公告)日：2018-07-24

申请号：US14950116

申请日：2015-11-24

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jeevan Reddy Neelam ,  Madasamy Shunmugavel ,  Harmohan Singh ,  Hassan Ali Kojori

IPC: G01R31/36 ,  H02J7/00

Abstract: A system for assuring safe use of a battery pack includes a display unit and a state of health (SoH) monitor connected to the battery pack, the SoH monitor. The SoH monitor a) instructs the SoH monitor to measure terminal voltage of the battery pack at a beginning of a current flow cycle; b) instructs the SoH monitor to measure terminal voltage of the battery pack after completion of the current flow cycle; c) instructs the SoH monitor to successively re-measure terminal voltage of the battery pack after completion of the current flow cycle until one of the successively re-measured terminal voltages is equal to a previous one of the re-measured terminal voltage; d) instructs the SoH monitor to determine and record ampere-hours (Ah) passing through the battery pack during the time period between steps a) and c); e) instructs the SoH monitor to determine SoH of the battery pack as a function of a quotient of a difference between terminal voltages determined in steps a) and c) divided by the Ah determined in step d), and f) instructs the SoH monitor to send the SoH determined in step e) to the display unit for display as an updated SoH of the battery pack. A switch is operable to disconnect the battery pack from the DC power system upon the display unit indicating SoH of the battery pack being below a predetermined value.

公开(公告)号：US20170146606A1

公开(公告)日：2017-05-25

申请号：US14950116

申请日：2015-11-24

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jeevan Reddy Neelam ,  Madasamy Shunmugavel ,  Harmohan Singh ,  Hassan Ali Kojori

IPC: G01R31/36

CPC classification number: G01R31/3624 ,  G01R31/3679 ,  H02J7/0031 ,  H02J7/0047 ,  Y02T50/54

Abstract: A system for assuring safe use of a battery pack includes a display unit and a state of health (SoH) monitor connected to the battery pack, the SoH monitor. The SoH monitor a) instructs the SoH monitor to measure terminal voltage of the battery pack at a beginning of a current flow cycle; b) instructs the SoH monitor to measure terminal voltage of the battery pack after completion of the current flow cycle; c) instructs the SoH monitor to successively re-measure terminal voltage of the battery pack after completion of the current flow cycle until one of the successively re-measured terminal voltages is equal to a previous one of the re-measured terminal voltage; d) instructs the SoH monitor to determine and record ampere-hours (Ah) passing through the battery pack during the time period between steps a) and c); e) instructs the SoH monitor to determine SoH of the battery pack as a function of a quotient of a difference between terminal voltages determined in steps a) and c) divided by the Ah determined in step d), and f) instructs the SoH monitor to send the SoH determined in step e) to the display unit for display as an updated SoH of the battery pack. A switch is operable to disconnect the battery pack from the DC power system upon the display unit indicating SoH of the battery pack being below a predetermined value

公开(公告)号：US20180292460A1

公开(公告)日：2018-10-11

申请号：US16006688

申请日：2018-06-12

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jeevan Reddy Neelam ,  Madasamy Shunmugavel ,  Harmohan N Singh ,  Hassan Ali Kojori

IPC: G01R31/36 ,  H02J7/00

CPC classification number: G01R31/3842 ,  G01R31/392 ,  H02J7/0031 ,  H02J7/0047 ,  Y02T50/54

Abstract: A system for assuring safe use of a battery pack includes a display unit and a state of health (SoH) monitor connected to the battery pack, the SoH monitor. The SoH monitor a) instructs the SoH monitor to measure terminal voltage of the battery pack at a beginning of a current flow cycle; b) instructs the SoH monitor to measure terminal voltage of the battery pack after completion of the current flow cycle; c) instructs the SoH monitor to successively re-measure terminal voltage of the battery pack after completion of the current flow cycle until one of the successively re-measured terminal voltages is equal to a previous one of the re-measured terminal voltage; d) instructs the SoH monitor to determine and record ampere-hours (Ah) passing through the battery pack during the time period between steps a) and c); e) instructs the SoH monitor to determine SoH of the battery pack as a function of a quotient of a difference between terminal voltages determined in steps a) and c) divided by the Ah determined in step d), and f) instructs the SoH monitor to send the SoH determined in step e) to the display unit for display as an updated SoH of the battery pack. A switch is operable to disconnect the battery pack from the DC power system upon the display unit indicating SoH of the battery pack being below a predetermined value

公开(公告)号：US10514425B2

公开(公告)日：2019-12-24

申请号：US16006688

申请日：2018-06-12

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jeevan Reddy Neelam ,  Madasamy Shunmugavel ,  Harmohan N Singh ,  Hassan Ali Kojori

IPC: G01R31/36 ,  H02J7/00 ,  G01R31/3842 ,  G01R31/392

Abstract: A system for assuring safe use of a battery pack includes a display unit and a state of health (SoH) monitor connected to the battery pack, the SoH monitor. The SoH monitor a) instructs the SoH monitor to measure terminal voltage of the battery pack at a beginning of a current flow cycle; b) instructs the SoH monitor to measure terminal voltage of the battery pack after completion of the current flow cycle; c) instructs the SoH monitor to successively re-measure terminal voltage of the battery pack after completion of the current flow cycle until one of the successively re-measured terminal voltages is equal to a previous one of the re-measured terminal voltage; d) instructs the SoH monitor to determine and record ampere-hours (Ah) passing through the battery pack during the time period between steps a) and c); e) instructs the SoH monitor to determine SoH of the battery pack as a function of a quotient of a difference between terminal voltages determined in steps a) and c) divided by the Ah determined in step d), and f) instructs the SoH monitor to send the SoH determined in step e) to the display unit for display as an updated SoH of the battery pack. A switch is operable to disconnect the battery pack from the DC power system upon the display unit indicating SoH of the battery pack being below a predetermined value.

公开(公告)号：US20180246173A1

公开(公告)日：2018-08-30

申请号：US15444728

申请日：2017-02-28

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Harmohan N. Singh ,  Jeevan Reddy Neelam ,  Madasamy Shunmugavel

IPC: G01R31/36

CPC classification number: G01R31/367 ,  G01R31/3828 ,  G01R31/389 ,  G01R31/392

Abstract: Methods and apparatus for online estimation of battery model parameters for determining a State-of-Charge (SoC) and a State-of-Health (SoH) of a battery are provided. A mathematical approach using voltage, current, and temperature samples at programmable intervals to estimate RC battery model parameters is utilized, reducing computational requirements to enable real-time estimation of the SoC in an online environment. The SoC estimation utilizes an optimal estimator with an Extended Kalman Filter (EKF) to reduce sensitivity to process noise and measurement errors. After a discharge or charge operation, the SoH can also be estimated and updated as necessary.