Battery cell assembly and battery module for detecting swelling phenomenon thereof

Abstract

A battery cell assembly includes a battery cell, a cartridge surrounding an edge of the battery cell and having insertion holes on opposite sides thereof, and a strap section disposed across one surface of the battery cell and having an elongated body part, fastening parts on opposite ends of the elongated body part, and a press pin protruding vertically from the elongated body part. A battery module capable of detecting swelling includes the plurality of battery cell assemblies.

What is claimed is: 
     
         1 . A battery cell assembly comprising:
 a battery cell;   a cartridge surrounding an edge of the battery cell and having insertion holes on opposite sides thereof; and   a strap section disposed across one surface of the battery cell and having an elongated body part, fastening parts on opposite ends of the elongated body part and a press pin protruding vertically from the elongated body part.   
     
     
         2 . The battery cell assembly according to  claim 1 , wherein the press pin has a socket part and a ball part, which are coupled to the elongated both part in a snap-fit manner. 
     
     
         3 . The battery cell assembly according to  claim 2 , wherein the socket part has a recess in a lower surface thereof, and the ball part has a protrusion to be inserted into the recess of the socket part. 
     
     
         4 . The battery cell assembly according to  claim 1 , wherein the elongated body part has a through hole at a middle portion thereof. 
     
     
         5 . The battery cell assembly according to  claim 1 , wherein the press pin is positioned at a middle portion of the elongated body part. 
     
     
         6 . The battery cell assembly according to  claim 1 , wherein the fastening part includes a first body portion having a downwardly-protruding wedge on a lower end thereof, and a second body portion fastening the first body portion to the elongated body part. 
     
     
         7 . The battery cell assembly according to  claim 1 , wherein the elongated body part is made of an expandable and contractible material. 
     
     
         8 . The battery cell assembly according to  claim 7 , wherein the elongated body part is made of rubber. 
     
     
         9 . A battery module capable of detecting swelling comprising:
 a plurality of battery cell assemblies stacked in an electrically-connected manner, wherein each battery cell assembly includes a battery cell and a cartridge surrounding the battery cell;   a strap section disposed across one surface of the battery cell and having an elongated body part, fastening parts on opposite ends of the elongated body part, and a press pin protruding vertically from the elongated body part;   an upper cover arranged on one outermost battery cell assembly among the plurality of battery cell assemblies, and having a guide tube guiding the movement of the press pin;   a lower cover arranged on an opposite outermost battery cell assembly among the plurality of battery cell assemblies; and   an overcharge protector disposed on an upper surface of the upper cover.   
     
     
         10 . The battery module according to  claim 9 , wherein the guide tube vertically protrudes from the upper cover to the overcharge protector. 
     
     
         11 . The battery module according to  claim 9 , wherein the upper cover has a through hole, through which the guide tube is disposed. 
     
     
         12 . The battery module according to  claim 9 , wherein the upper cover includes a seat for supporting and holding the overcharge protector. 
     
     
         13 . The battery module according to  claim 12 , wherein the guide tube further include a seal on an inner circumference to shield the interior of the battery module. 
     
     
         14 . The battery module according to  claim 13 , wherein the seal is formed from an elastic membrane material. 
     
     
         15 . The battery module according to  claim 9 , wherein the plurality of battery cell assemblies, the upper cover, and the lower cover are fastened together by means of a fastening member. 
     
     
         16 . The battery module according to  claim 9 , wherein the press pin is disposed under the guide tube. 
     
     
         17 . The battery module according to  claim 9 , wherein the strap section is disposed on in outermost battery cell assembly. 
     
     
         18 . The battery module according to  claim 9 , wherein the cartridge has insertion holes on opposite sides thereof. 
     
     
         19 . The battery module according to  claim 9 , wherein the through hole and the guide tube of the upper cover, and the press pin are aligned in a line.