公开(公告)号：US11139664B2

公开(公告)日：2021-10-05

申请号：US16127963

申请日：2018-09-11

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Abhijeet Kumar Singh ,  Manish Parmar ,  Dipankar Mitra ,  Vv Shyam Prasad ,  Mahesh Kv

IPC: H02J7/00 ,  H01M10/48 ,  G01R31/382

Abstract: A battery protector includes analog frontend circuitry coupled to a hibernate mode input terminal that is one of configured to couple to a high voltage connector terminal when the system is connected to an external load or charger to define an active mode and configured to float when the system is disconnected from the external load or charger to define a hibernate mode. The analog frontend circuitry is configured to provide a signal at an output thereof to distinguish, in the absence of an external ground connection, between connected and floating conditions for the hibernate mode input terminal. Digital logic is coupled with the output of the analog frontend circuitry, the digital logic providing a digital signal to control whether the battery protector is operating in the active mode or the hibernate mode based on the signal at the output of the analog frontend circuitry.

公开(公告)号：US10608442B1

公开(公告)日：2020-03-31

申请号：US16140181

申请日：2018-09-24

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Manish Parmar ,  Vv Shyam Prasad ,  Dipankar Mitra ,  Mahesh Kv

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

Abstract: A cell balancing system includes sensing circuitry configured to sense a cell voltage of each of a plurality of cells of a battery. Cell balancing circuitry is configured to balance each of the plurality of cells in response to a respective cell balancing command for each of the plurality of cells. A comparison circuit configured to compare the sensed cell voltages for each of the plurality of cells to an adaptive threshold voltage. The comparison circuit generates a respective cell state for each of the plurality of cells to indicate a state of the respective cell voltage for each of the plurality of cells relative to the adaptive threshold voltage. A controller is configured to set the respective cell balancing command for each of the plurality of cells and to adjust the adaptive threshold voltage based on an evaluation of the cell states for the plurality of cells.

公开(公告)号：US10971939B2

公开(公告)日：2021-04-06

申请号：US16788996

申请日：2020-02-12

Applicant: Texas Instruments Incorporated

Inventor： Manish Parmar ,  V V Shyam Prasad ,  Dipankar Mitra ,  Mahesh K V

IPC: H02J7/14 ,  H01M10/42 ,  H01M10/44 ,  H02J7/00

Abstract: A cell balancing system includes sensing circuitry configured to sense a cell voltage of each of a plurality of cells of a battery. Cell balancing circuitry is configured to balance each of the plurality of cells in response to a respective cell balancing command for each of the plurality of cells. A comparison circuit configured to compare the sensed cell voltages for each of the plurality of cells to an adaptive threshold voltage. The comparison circuit generates a respective cell state for each of the plurality of cells to indicate a state of the respective cell voltage for each of the plurality of cells relative to the adaptive threshold voltage. A controller is configured to set the respective cell balancing command for each of the plurality of cells and to adjust the adaptive threshold voltage based on an evaluation of the cell states for the plurality of cells.

公开(公告)号：US20200185932A1

公开(公告)日：2020-06-11

申请号：US16788996

申请日：2020-02-12

Applicant: Texas Instruments Incorporated

Inventor： Manish Parmar ,  V V Shyam Prasad ,  Dipankar Mitra ,  Mahesh KV

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

Abstract: A cell balancing system includes sensing circuitry configured to sense a cell voltage of each of a plurality of cells of a battery. Cell balancing circuitry is configured to balance each of the plurality of cells in response to a respective cell balancing command for each of the plurality of cells. A comparison circuit configured to compare the sensed cell voltages for each of the plurality of cells to an adaptive threshold voltage. The comparison circuit generates a respective cell state for each of the plurality of cells to indicate a state of the respective cell voltage for each of the plurality of cells relative to the adaptive threshold voltage. A controller is configured to set the respective cell balancing command for each of the plurality of cells and to adjust the adaptive threshold voltage based on an evaluation of the cell states for the plurality of cells.