公开(公告)号：US20250076401A1

公开(公告)日：2025-03-06

申请号：US18677422

申请日：2024-05-29

Applicant: HYUNDAI MOTOR COMPANY ,  Kia Corporation

Inventor： Yoon Sung CHOI ,  Ju Seok KIM ,  Yoo Hong JANG ,  Sang Jin LEE ,  Hyo Kyung LEE ,  Yo Han BAEK

IPC: G01R31/392 ,  G01R31/374 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396

Abstract: A battery management apparatus includes a control circuit configured to determine an internal resistance value for each of one or more battery cells included in a battery pack by using a current change amount of the battery pack and a voltage change amount of the one or more battery cells, and diagnose defects in the one or more battery cells by using internal resistance values of the one or more battery cells, in response to charging the battery pack, where the control circuit is configured to determine the current change amount of the battery pack and the voltage change amount of the one or more battery cells based on a current change request time point requiring a charging current change based on a voltage of the battery pack reaching a predetermined voltage during the charge of the battery pack.

公开(公告)号：US20250028000A1

公开(公告)日：2025-01-23

申请号：US18388920

申请日：2023-11-13

Applicant: HYUNDAI MOTOR COMPANY ,  Kia Corporation

Inventor： Yoo Hong JANG ,  Yoon Sung CHOI ,  Sang Jin LEE ,  Hyo Kyung LEE ,  Yo Han BAEK

IPC: G01R31/3835 ,  G01R31/371 ,  G01R31/396 ,  G01R31/52 ,  H01M10/48

Abstract: An apparatus for monitoring a battery of a vehicle includes one or more sensors and a processor, wherein the one or more sensors may obtain a first voltage during a stabilization time of the battery, obtain a minimum voltage measured from a time point when the stabilization time ends to a time point when parking of the vehicle ends as a second voltage of the battery, and detect a temperature of the battery from a time point when the first voltage is obtained to a time point when the second voltage is obtained, and the processor may determine a first discharge amount based on the first voltage and the second voltage, determine a second discharge amount consumed in balancing the battery and operating the one or more sensors, determine a first self-discharge amount and a second self-discharge amount based on the first discharge amount, the second discharge amount, and the temperature, and determine whether a short circuit has occurred in the battery based on the first self-discharge amount and the second self-discharge amount.

公开(公告)号：US20220388231A1

公开(公告)日：2022-12-08

申请号：US17681055

申请日：2022-02-25

Applicant: HYUNDAI MOTOR COMPANY ,  Kia Corporation

Inventor： Sang Jin LEE

IPC: B29C59/04 ,  B29C59/00

Abstract: An insulation sheet forming apparatus that forms an insulation sheet having one or more bent regions includes an unwinding module; a preforming module configured to form a preforming region on the insulation sheet supplied from the unwinding module; and a bending module configured to form the bent region on the insulation sheet by bending the insulation sheet supplied from the preforming module, in which the preforming module has a width which is adjustable in a width direction that intersects a movement direction of the insulation sheet.

公开(公告)号：US20250076392A1

公开(公告)日：2025-03-06

申请号：US18533566

申请日：2023-12-08

Applicant: Hyundai Motor Company ,  Kia Corporation

Inventor： Yoo Hong JANG ,  Yoon Sung CHOI ,  Bo Hyun LEE ,  Sang Jin LEE ,  Hyo Kyung LEE ,  Yo Han BAEK

IPC: G01R31/3835 ,  G01R31/36 ,  G01R31/396 ,  H01M10/42

Abstract: In an apparatus for correcting a voltage of a battery cell and a method thereof. The apparatus includes a voltage sensor configured for measuring voltages of a plurality of battery cells, and a controller which is configured for determining an amount of voltage change of each battery cell corresponding to a preset discharge current, detects target battery cells whose identification numbers have preset intervals while the amount of voltage change does not exceed a threshold value, and corrects the amount of voltage change of each target battery cell.

公开(公告)号：US20250028003A1

公开(公告)日：2025-01-23

申请号：US18519358

申请日：2023-11-27

Applicant: HYUNDAI MOTOR COMPANY ,  Kia Corporation

Inventor： Yoon Sung CHOI ,  Yo Han BAEK ,  Sang Jin LEE ,  Hyo Kyung LEE ,  Yoo Hong JANG

IPC: G01R31/385 ,  G01R31/396 ,  G01R31/52

Abstract: An apparatus for detecting soft shorts of a battery cell and a method for the same are provided. The apparatus includes a sensor to measure voltages of a plurality of battery cells, and a controller to determine a slope of a voltage of each battery cell, the deviation of the slope of the voltage for each battery cell, and detect a battery cell, which has the soft shorts, of the plurality of battery cells, based on the slope and the deviation.