公开(公告)号：US20250015384A1

公开(公告)日：2025-01-09

申请号：US18347767

申请日：2023-07-06

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Liang Xi ,  Alexander M. Bilinski ,  Lei Wang ,  Srikant Srinivasan ,  SriLakshmi Katar

IPC: H01M10/653 ,  B60K11/02 ,  B60L50/64 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6556 ,  H01M10/6568 ,  H01M50/103 ,  H01M50/209

Abstract: A mechanical design of a rechargeable battery cell (e.g., a Lithium-ion battery) disposed inside of a prismatic can, for use in electric vehicles and other electric-powered devices. The improved design uses a thermally conductive insert to divide the battery cell into two adjacent volumes that each hold a pair of stacked layers of a battery cell. This thermally conductive insert conducts heat from the center of the battery cell during battery recharging to actively-cooled channels disposed in a pair of cooling manifolds that are disposed on two vertical sides of the battery cell. Alternatively, or additionally, an actively-cooled bottom cold plate can be used. The pair of stacked battery layers can each be wound in a “jelly-roll” geometric configuration. The thermally conductive insert may be made of aluminum, aluminum alloy, copper, or copper alloy, and combinations thereof.

公开(公告)号：US20240429495A1

公开(公告)日：2024-12-26

申请号：US18340267

申请日：2023-06-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Anil Yadav ,  Srikant Srinivasan

IPC: H01M50/103 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6554

Abstract: A prismatic battery includes a prismatic battery can having an upper region, a vertical Z-direction along a height of the prismatic battery can, and a horizontal Y-direction along a width of the prismatic battery can. A plurality of stacked battery layers is disposed inside of the prismatic battery can. The stacked battery layers have an in-plane direction and a transverse direction that is perpendicular to the in-plane direction. The stacked battery layers have an orthotropic thermal conductivity that has a high, in-plane thermal conductivity in the in-plane direction and has a low, transverse thermal conductivity in the transverse direction. The stacked battery layers are folded inside of the prismatic battery can in an Inverted-U geometric configuration. The Inverted-U geometry is configured to provide a longer thermal delay time and a reduced peak temperature in response to a Thermal Runaway event occurring in an adjacent battery can.