Gm Global Technolgoy Operations, Inc.

Chih-Cheng Hsu

Alexander M Bilinski

John E Carsley

Herman K Phlegm

Sherman H Zeng

Mahmoud H Abd Elhamid

Andrew J Namou

Pablo Valencia, Jr

Timothy J Fuller

Anil Kumar Sachdev

Xiaosong Huang

James Gregory Schroth

Taeyoung Han

Tao Xie

Bahram Khalighi

Kuo-Huey Chen

John Neal Owens

Roger Michael Brisbane

Evan J Dawley

Raja K Mishra

Tao Wang

Leo Francis Schwab

Albert H Butlin, Jr

Benjamin R Christian

Zhongying Shi

Charles Hua

Sooho Kim

Igor M Kan

Yan Wu

Caleb A Jones

Robert D Drexler

Stephen R Koshorek

Susan Elizabeth Hartfield-Wunsch

Bao Wang

Theresa M Lee

Stewart T Edmison

Rebecca S Ratz

Hui-Min Huang

Abdullah-Al Mamun

A thermally conductive bracket is contemplated for use in a vehicle to facilitate transfer heat from a busbar to a cold plate, such as to assist with heat transfer to a cold plate used to act as a heat sink for a plurality of battery cells connected to the busbar. The bracket may include a thermally conductive heat transfer material shaped to receive the busbar where at least a portion of the material is configured to include opposed sides and a bottom such that the opposed sides are configured to transfer heat from the busbar to the bottom and the bottom is configured to transfer heat from the sides to the cold plate.

Thermally conducting bracket for busbar to cold plate heat transfer

A battery includes a first mono cell formed from a first electrode foil having a first body and a first tab, and a first coating. The first body has long edges and short edges, and a length-to-width ratio of the first body is at least five. The first tab extends from one of the long edges of the first body entirely between one of the short edges a midpoint of the long edge. A second electrode foil has similar structure to the first electrode foil and coating, but a second tab is aligned opposite the first tab along the short edges. A second mono cell has similar structure. A third tab and a fourth tab of the second mono cell are on an opposing side of the midpoint of the long edges from the first tab and the second tab.

Battery cell with increased tab area and method and apparatus for manufacturing same

A method of forming batteries includes feeding a foil through a coating machine. The movement of the foil defines a foil direction. The method applies a first coating band and a second coating band to the foil. The second coating band is spaced from the first coating band by a first tab gap. The foil is cut substantially perpendicular to the foil direction to separate a first coated blank. The first coated blank is cut separate the first coating band and a first portion of the first tab gap, and to separate the second coating band and a second portion of the first tab gap. A first electrode is formed from the first coating band and the first portion of the first tab gap, and a second electrode is formed from the second coating band and the second portion of the first tab gap.

A thermal interface member may comprise a substrate having a first surface and an opposite second surface, an electrically conductive layer disposed on the first surface of the substrate, and an electrically resistive layer disposed on the first surface of the substrate. The substrate may comprise a compliant electrically insulating and thermally conductive material including a polymeric matrix phase and a dispersed phase of thermally conductive particles. The conductive layer may be patterned into a first electrode and a second electrode spaced apart from the first electrode on the first surface of the substrate. The resistive layer may be in electrical contact with the first and second electrodes of the conductive layer and may comprise a resistive material having a positive resistance temperature coefficient and a resistance that increases with an increase in temperature.

Thermal interface member and method of making the same

A battery for an electric vehicle includes first and second pairs of modules in electrical communication with each other. The first pair of modules includes a first module and a second module. The second module is in electrical and thermal communication with the first module via a first plurality of outer bus bars. The second pair of modules includes a third module and a fourth module. The fourth module is in electrical and thermal communication with the third module via a second plurality of outer bus bars. The first and second pairs of modules are coupled to each other via a first inner connecting bus bar and a second inner connecting bus bar proximate to a center region of each of the second and third modules.

Battery for an electric vehicle

A lithium ion battery electrode, cell, or module, and a method and apparatus for making the same, is provided. The cell includes a first electrode foil having a first body and a first tab. The first body has long edges defining a length, and short edges defining a width. A length-to-width ratio of the first body is at least two, but may be at least five. The first tab extends from one of the long edges of the first body, and is entirely between one of the short edges of the first body and a midpoint of the long edge. A first coating is formed of one of an anodic material and a cathodic material, and substantially covers and least one side of the first body of the first electrode foil.

A product may include a battery cell, and a housing may contain the battery cell. A cooling assembly may include an impeller that may circulate air in the housing. A turbine may be connected with the impeller so that the turbine and impeller may rotate together.

Self propelled battery cooling system to extend the ride-range of an electric bike

A product may include a battery pack, and a housing may receive the battery pack. The housing may comprise a plastic containing an additive that is electrically insulating and that has a greater thermal conductivity than the plastic.

Integrated passive cooling system and method

A cooling system for a battery is provided which includes a first tube, a second tube and a middle section which may be formed from an electrically insulating yet thermally conductive material. The first tube and the second tube may each be adapted to transfer coolant from a first end to a second end. The middle section integral may be the first tube on the first side of the middle section and integral to the second tube on the second side of the middle section. The first tube, the second tube and the middle section may be operatively configured to draw thermal energy away from at least one bus bar and corresponding cell tabs for a battery.

Vehicle battery cooling system

A battery pack assembly includes a tray and a battery disposed in the tray. The battery pack assembly also includes an absorption member disposed in the tray and configured to wick moisture out of the tray and away from the battery.

Battery pack assembly

Disclosed herein are a variety of embodiments of a thermal interface material that may be used in a variety of systems and methods to improve heat transfer. One embodiment consistent with the present disclosure includes a heat dissipation system that includes a heat source and a heat sink. A thermal interface material may be at least partially disposed between the heat source and the heat sink. The thermal interface material may include a plurality of strands of thermally conductive material woven into a pattern. The thermal interface material may be configured to conform to the contact surfaces of the heat source and the heat sink to thereby increase transference of heat between the heat source and the heat sink.

Thermal interface material and related systems and methods

Methods and systems for depowering an automotive battery in a controlled manner. The methods comprise (i) providing a depowering medium comprising one or more non-ionic electric conductors (for example, a carbon conductor) dispersed in a substantially non-ionic aqueous medium; (ii) contacting terminals of the battery with the depowering medium; and (iii) maintaining contact between the depowering medium and terminals for a period of time sufficient to depower the battery. The systems comprise (i) the depowering medium; and (ii) a container configured to receive a battery and the depowering medium such that the battery body is contacted with the depowering medium prior to the terminals.

System and methods for controlled depowering of automobile batteries

An automotive battery module with one or more battery cells and a heat exchange member placed in thermal communication with the battery cell. Heat generated within the battery cell by, among other things, electric current that can be used to provide motive power for the automobile may be removed by the heat exchange member that is made up of a flexible substrate and one or more graphene layers disposed on the substrate. The construction of the substrate and graphene layer is such that multiple heat transfer paths are established, each defining different levels of thermal conductivity and related transfer of heat away from the battery cells.

Method for thermal management and mitigation of thermal propagation for batteries using a graphene coated polymer barrier substrate

A battery module is described. The battery module includes the battery module includes a plurality of repeating frames; a plurality of battery cells positioned between the plurality of repeating frames, the battery cells having a flexible heat conducting covering, an edge of the heat conducting covering folded over an outside edge of the repeating frame; and a heat sink contacting the edge of the heat conducting covering folded over the edge of the repeating frame. A method of cooling a battery module is also described.

Compact battery cooling design

A device and method for operating automotive battery system relays and related switches. By creating a dual bipolar magnetic field adjacent the contactor portion of a switching mechanism in the relay, the magnetic field used to promote arc extinguishing is shifted, which in turn reduces the Lorentz force that forms as a byproduct of the field. Such a configuration has the potential for simultaneously maintaining arc-extinguishing capability and improving short-circuit withstanding capability while reducing the tendency of the Lorentz forces to interfere with the operation of a solenoid or other switch-activating mechanisms. Such devices and methods may be used in conjunction with hybrid-powered and electric-powered vehicles.

Growing community of inventors

Rochester Hills, MI, United States of America

Chih-Cheng Hsu