Patents by Inventor Björn Gudmund Gudmundsson

Björn Gudmund Gudmundsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and device relating to battery temperature regulation
    Patent number: 6596433
    Abstract: The present invention pertains to the field of methods and devices for battery (9) temperature regulation. Phase change material (7;7a,7b) having a phase change temperature within a preferred operating temperature range is employed in order to maintain the battery temperature within the preferred operating temperature range during extreme ambient temperature conditions. When the temperature of an ambient medium (21) so allows, a transfer of heat between the phase change material (7;7a,7b) and ambient medium (21) is effected for quickly restoring the capability of the phase change material (7;7a,7b) to maintain the battery temperature at the phase change temperature. Otherwise, thermal insulation between the phase change material (7;7a,7b) and the ambient medium (21) is provided.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: July 22, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Björn Gudmund Gudmundsson, Jan-Olof Tage Hammarling