Cell composite useful in lithium-ion battery, comprises predetermined number of parallely and/or serially interconnected single cells, where each single cell has housing made of sheathing plates and electrically insulating housing frame

摘要

The cell composite (9) comprises a predetermined number of parallely and/or serially interconnected single cells (10), where each single cell has a housing, which is made of two sheathing plates (2) and an electrically insulating housing frame (3) arranged between the sheathing plates. The respective sheathing plate is connected with a pole (P) of the single cell. The housing frame halves are formed on the respective sheathing plate at both sides, so that they project over the sheathing plate on both sides at equal length. The housing frame consists of thermoplastic material. The cell composite (9) comprises a predetermined number of parallely and/or serially interconnected single cells (10), where each single cell has a housing, which is made of two sheathing plates (2) and an electrically insulating housing frame (3) arranged between the sheathing plates. The respective sheathing plate is connected with a pole (P) of the single cell. The housing frame halves are formed on the respective sheathing plate at both sides, so that they project over the sheathing plate on both sides at equal length. The housing frame consists of thermoplastic material. The housing frame halves of two adjacent sheathing plates that are arranged to each other are connected with one another by a material connection. The housing frame forms one of the single cells. The length of the respective housing frame halves corresponds to a half width of the distance between the sheathing plates that are arranged next to each other in the cell composite. The material connection is a friction-welding connection between the adjacent housing frame halves. The housing frame halves completely surround the sheathing plates at the edge side. Breakthroughs are introduced in the sheathing plate in the area of the formed-housing frame halves. The surface of the sheathing plates is provided with a surface structure in the area of the formed-housing frame halves. The surface of the sheathing plate is chemically activated in the area of the formed-housing frame halves. All current conductor lugs and the sheathing plate are materially connected with one another by a continuous welding seam or a portion of the continuous welding seam, where the current conductor form the pole and are viewed in the direction of the stacking of the electrode stack. Independent claims are included for: (1) a method for producing a cell composite; and (2) a battery.