Energy Storage Cell, Battery Module, and Production Method

An electrochemical energy storage cell, comprising:

• an electrode stack comprising a plurality of electrodes of a first polarity and a plurality of electrodes of a second polarity opposite the first polarity, wherein each of the electrodes of the first polarity comprises a first conductor lug which protrudes out of the electrode stack on a first side of the electrode stack, and each of the electrodes of the second polarity comprises a second conductor lug which protrudes out of the electrode stack on a second side of the electrode stack opposite the first side;
• a housing in which the electrode stack is arranged and that is connected electrically conductively to the first conductor lugs;
• and
• a connecting element which is arranged in a housing wall of the housing and is electrically connected to the second conductor lugs, wherein the connecting element is electrically insulated from the housing and is configured to electrically connect an outer side of the housing and the second conductor lugs.

A method for producing an energy storage cell, the method comprising:

• arranging a plurality of electrodes of a first polarity and a plurality of electrodes of a second polarity opposite the first polarity in an electrode stack such that each of a plurality of first conductor lugs of the electrodes of the first polarity protrudes out of the electrode stack on a first side of the electrode stack, and each of a plurality of second conductor lugs of the electrodes of the second polarity protrudes out of the electrode stack on a second side of the electrode stack lying opposite the first sides;
• establishing a first electrical connection between the first conductor lugs and a housing;
• establishing a second electrical connection between the second conductor lugs and a connecting element arranged in a housing wall of the housing that is electrically insulated from the housing and is configured to electrically connect an outer side of the housing and the second conductor lugs;
• and
• sealing the housing.