公开(公告)号：US11688904B2

公开(公告)日：2023-06-27

申请号：US17228877

申请日：2021-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Cara A. Koepele ,  Su Jung Han ,  Raviraj U. Nayak

IPC: H01M10/658 ,  H01M50/204 ,  H01M10/613 ,  H01M10/625 ,  B60K1/04

CPC classification number: H01M10/658 ,  B60K1/04 ,  H01M10/613 ,  H01M10/625 ,  H01M50/204 ,  B60K2001/0416 ,  H01M2220/20

Abstract: A multi-module battery pack includes a battery tray defining multiple battery tray compartments, battery modules each disposed within a corresponding one of the compartments, and a thermal barrier arranged in a predefined heat transfer path through the tray between an adjacent pair of the battery modules. The thermal barrier has a thickness of at least about 1 mm and a thermal conductivity of less than about 4 W/m-K, such that the thermal barrier blocks the heat transfer path to mitigate a thermal runaway event of one of the adjacent pair of battery modules. An electric powertrain system includes a rotary electric machine having phase leads and an output member, a driven load coupled to the output member, and the multi-module battery pack. A method includes providing the tray, identifying the heat transfer path, and arranging the thermal barrier in the heat transfer path.

公开(公告)号：US20200328487A1

公开(公告)日：2020-10-15

申请号：US16380262

申请日：2019-04-10

Applicant: GM Global Technology Operations LLC

Inventor： Raviraj U. Nayak ,  Derek W. Fultz ,  Robert D. Drexler

IPC: H01M10/6569 ,  H01M2/10 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/653 ,  H01M10/663

Abstract: A thermal management system for an on-vehicle battery includes a battery, a first thermal element, a second thermal element, a battery mounting bracket, and a vehicle body structural element. The battery mounting bracket includes a first portion attached to the vehicle body structural element, and a second portion attached to the first thermal element. The first thermal element is attached to the first end portion of the battery, and the second thermal element is attached to at least one of the second end portion, the first and second side portions, the top portion or the bottom portion of the battery. The first thermal element is composed from a first phase-change material having a first phase-change temperature and the second thermal element is composed from a second phase-change material having a second phase-change temperature, wherein the first phase-change temperature is greater than the second phase-change temperature.

公开(公告)号：US20220328900A1

公开(公告)日：2022-10-13

申请号：US17228877

申请日：2021-04-13

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Cara A. Koepele ,  Su Jung Han ,  Raviraj U. Nayak

IPC: H01M10/658 ,  H01M50/204 ,  B60K1/04 ,  H01M10/625 ,  H01M10/613

Abstract: A multi-module battery pack includes a battery tray defining multiple battery tray compartments, battery modules each disposed within a corresponding one of the compartments, and a thermal barrier arranged in a predefined heat transfer path through the tray between an adjacent pair of the battery modules. The thermal barrier has a thickness of at least about 1 mm and a thermal conductivity of less than about 4 W/m-K, such that the thermal barrier blocks the heat transfer path to mitigate a thermal runaway event of one of the adjacent pair of battery modules. An electric powertrain system includes a rotary electric machine having phase leads and an output member, a driven load coupled to the output member, and the multi-module battery pack. A method includes providing the tray, identifying the heat transfer path, and arranging the thermal barrier in the heat transfer path.

公开(公告)号：US20180194212A1

公开(公告)日：2018-07-12

申请号：US15403490

申请日：2017-01-11

Applicant: GM Global Technology Operations LLC

Inventor： David P. Hamilton ,  Raviraj U. Nayak ,  Amit Kumar

IPC: B60K1/04 ,  B62D25/20 ,  B62D21/02 ,  B62D27/06 ,  B60N2/015

CPC classification number: B60K1/04 ,  B60K2001/0438 ,  B60N2/015 ,  B60Y2304/05 ,  B60Y2304/07 ,  B62D21/02 ,  B62D25/20 ,  B62D27/065

Abstract: An electric vehicle includes a chassis frame and a battery pack disposed below and engaged to the chassis frame. The chassis frame includes a first cross member, and the battery pack includes a support structure having a first cross component. The first cross component co-extends with, and is engaged to, the first cross member.

公开(公告)号：US09926017B1

公开(公告)日：2018-03-27

申请号：US15413829

申请日：2017-01-24

Applicant: GM Global Technology Operations LLC

Inventor： David P. Hamilton ,  Raviraj U. Nayak ,  Giles D. Bryer ,  Frank Haubold

IPC: B62D27/02 ,  B60K1/04 ,  B62D21/09 ,  B62D21/02

CPC classification number: B62D27/02 ,  B60K1/04 ,  B60K2001/0438 ,  B62D21/02 ,  B62D21/09 ,  B62D25/20

Abstract: An electric vehicle includes a chassis frame, a battery pack, and a multi-shear fastener. The battery pack includes a support structure vertically spaced, at least in-part, from the chassis frame. The multi-shear fastener is constructed and arranged to attach the chassis frame to the support structure.

公开(公告)号：US11108103B2

公开(公告)日：2021-08-31

申请号：US16380262

申请日：2019-04-10

Applicant: GM Global Technology Operations LLC

Inventor： Raviraj U. Nayak ,  Derek W. Fultz ,  Robert D. Drexler

IPC: H01M10/6569 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/625 ,  H01M10/653 ,  H01M10/663 ,  H01M10/647 ,  H01M50/20 ,  B60R16/033

Abstract: A thermal management system for an on-vehicle battery includes a battery, a first thermal element, a second thermal element, a battery mounting bracket, and a vehicle body structural element. The battery mounting bracket includes a first portion attached to the vehicle body structural element, and a second portion attached to the first thermal element. The first thermal element is attached to the first end portion of the battery, and the second thermal element is attached to at least one of the second end portion, the first and second side portions, the top portion or the bottom portion of the battery. The first thermal element is composed from a first phase-change material having a first phase-change temperature and the second thermal element is composed from a second phase-change material having a second phase-change temperature, wherein the first phase-change temperature is greater than the second phase-change temperature.

公开(公告)号：US10112470B2

公开(公告)日：2018-10-30

申请号：US15403490

申请日：2017-01-11

Applicant: GM Global Technology Operations LLC

Inventor： David P. Hamilton ,  Raviraj U. Nayak ,  Amit Kumar

IPC: B60K1/04 ,  B62D25/20 ,  B62D21/02 ,  B62D27/06 ,  B60N2/015

Abstract: An electric vehicle includes a chassis frame and a battery pack disposed below and engaged to the chassis frame. The chassis frame includes a first cross member, and the battery pack includes a support structure having a first cross component. The first cross component co-extends with, and is engaged to, the first cross member.