US 9,812,685 B2
Battery pack for electric vehicle
Takuma Nozaki, Aioi (JP); Kouichirou Sano, Himeji (JP); and Katsunori Igaki, Kakogawa (JP)
Assigned to Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, Hyogo (JP)
Appl. No. 14/440,578
Filed by KAWASAKI JUKOGYO KABUSHIKI KAISHA, Kobe-shi, Hyogo (JP)
PCT Filed Nov. 16, 2012, PCT No. PCT/JP2012/007381
§ 371(c)(1), (2) Date May 4, 2015,
PCT Pub. No. WO2014/076740, PCT Pub. Date May 22, 2014.
Prior Publication US 2015/0280188 A1, Oct. 1, 2015
Int. Cl. H01M 2/10 (2006.01); B60L 11/18 (2006.01); B60K 1/04 (2006.01); H01M 10/625 (2014.01); H01M 10/6563 (2014.01)
CPC H01M 2/1083 (2013.01) [B60K 1/04 (2013.01); B60L 11/1816 (2013.01); H01M 2/1077 (2013.01); B60K 2001/0455 (2013.01); B60K 2001/0466 (2013.01); B60Y 2200/141 (2013.01); B60Y 2200/23 (2013.01); H01M 10/625 (2015.04); H01M 10/6563 (2015.04); H01M 2220/20 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A battery pack for an electric vehicle, comprising:
a plurality of batteries which store electric power for activating the electric vehicle;
a single battery container which is made of an insulating resin and accommodates the plurality of batteries therein;
an external frame unit which surrounds a portion of an outer surface of the battery container and supports the battery container from below;
an internal frame unit which couples the plurality of batteries to each other to accommodate the batteries coupled to each other into the battery container,
wherein the external frame unit includes a lower support section placed on a lower surface of the battery container, an upper support section placed on an upper surface of the battery container, and a coupling section which is a flat plate member placed to conform in shape to a side surface of the battery container and coupling the lower support section and the upper support section to each other,
wherein the internal frame unit includes a retaining section which couples the plurality of batteries to each other and retains the plurality of batteries coupled to each other, and a battery support section placed on a lower surface of a battery assembly including the plurality of batteries coupled to each other by the retaining section to support the battery assembly from below,
wherein the battery support section is in surface contact with a bottom surface of an interior of the battery container in a plurality of locations.