Battery module

Abstract

The present invention proposes a structure of a battery module in which a spacer can slide by means of a guide member constituting the battery module and can be positioned. A battery module according to the present invention is a battery module 9 provided with a battery block 8 in which a plurality of rectangular battery cells 1 are arranged and laminated, and includes a spacer 2 which intervenes between the plurality of battery cells 1 , guide members 4 and 5 which slidably support the spacer 2 along a laminating direction of the battery cells 1 , and end plates 3 as a pair which are respectively arranged on one side and the other side of the guide members 4 and 5 in a sliding direction and which sandwich the battery block 8 from both sides in the sliding direction.

What is claimed is: 
     
         1 . A battery module comprising:
 a battery block in which a plurality of rectangular battery cells are arranged and laminated, each rectangular battery cell having a surface on which external terminals are arranged and side surfaces continuous with the surface on which the external terminals are arranged;   a spacer arranged between the battery cells;   a pair of side plates adapted to engage with the spacer and arranged on sides of the side surfaces of each battery cell, wherein   engagement portions between the spacer and the pair of side plates are provided along a laminated direction of the battery cells, are opposed to the surface on which the external terminals are arranged of each battery cell, and are located beside the external terminals.   
     
     
         2 . The battery module according to  claim 1 , wherein the pair of side plates includes a pair of opposed portions adapted to be opposed to the surface on which the external terminals are arranged of each battery cell. 
     
     
         3 . The battery module according to  claim 2 , wherein each opposed portion has a recess portion with which the spacer is adapted to engage. 
     
     
         4 . The battery module according to  claim 3 , wherein the recess portion has a cross-section in a semi-circular shape. 
     
     
         5 . The battery module according to  claim 2 , wherein the recess portion has a cross-section in a semi-circular shape. 
     
     
         6 . The battery module according to  claim 1 , wherein the recess portion has a cross-section in a semi-circular shape.