Terminal assembly for an electronic cell

A method of forming a terminal assembly for an electrochemical cell, the method comprising the following method steps,

• providing a lid plate that is configured to close an open end of a housing of the electrochemical cell, the lid plate including an opening;
• providing a terminal comprising a terminal plate and a boss that protrudes from an outward facing surface of the terminal plate;
• treating with a surface treatment a first region of one of an inner surface of the lid plate and the outward facing surface of the terminal plate such that the first region has first surface properties;
• applying an adhesive layer to the one of an inner surface of the lid plate and the outward facing surface of the terminal plate, wherein the first surface properties are configured to negatively impact a flow of the adhesive layer, whereby the presence of the first region having the first surface properties serves as a stop line that inhibits the flow of the adhesive layer along the one of the inner surface of the lid plate and the outward facing surface of the terminal plate, and an outer boundary of the adhesive layer resides in an area corresponding to the first region when the terminal assembly is viewed in plan view;
• and
• assembling the terminal with the lid plate such that the outward facing surface of the terminal plate confronts the inner surface of the lid plate, the boss extends through the opening, and the adhesive layer provides a fluid-tight seal between the cell housing and the terminal, and electrically isolates the cell housing from the terminal.

A method of forming a terminal assembly for an electrochemical cell, the method comprising the following method steps,

• providing a lid plate that is configured to close an open end of a housing of the electrochemical cell, the lid plate including an opening;
• providing a terminal comprising a terminal plate and a boss that protrudes from an outward facing surface of the terminal plate;
• prior to application of an adhesive layer to one of an inner surface of the lid plate and the outward facing surface of the terminal plate, forming a stop line of the adhesive layer by providing a surface treatment in a first region of the one of the inner surface of the lid plate and the outward facing surface of the terminal plate, the first region formed at a location corresponding to the stop line;
• applying an adhesive layer to the one of the inner surface of the lid plate and the outward facing surface of the terminal plate, the adhesive layer forming an adhesive layer peripheral boundary that coincides with the stop line;
• and
• assembling the terminal with the lid plate such that the outward facing surface of the terminal plate confronts the inner surface of the lid plate, the boss extends through the opening, and the adhesive layer provides a fluid-tight seal between the cell housing and the terminal and electrically isolates the cell housing from the terminal.

A terminal assembly for an electrochemical cell, the terminal assembly consisting of

• a lid plate configured to close one end of a cell housing of the electrochemical cell, the lid plate including an opening,
• a terminal including a terminal plate and a boss that protrudes from an outward facing surface of the terminal plate, and
• an adhesive layer disposed between the lid plate and the terminal,
• wherein
• the terminal is assembled with the lid plate such that the outward facing surface faces an inner surface of the lid plate and the boss extends through the opening.