Pole piece fixing mechanism and button cell

Abstract

The invention discloses a pole piece fixing mechanism and a button cell and belongs to the technical field of cells. The pole piece fixing mechanism comprises pole pieces, pole piece cover shells, a current collecting structure and a conductive elastomer, wherein the pole pieces are arranged in cavity bodies on the pole piece cover shells; the current collecting structure is arranged between the pole pieces and the pole piece cover shells; the conductive elastomer is arranged between the current collecting structure and the pole piece cover shells, one end of the conductive elastomer is buttedwith the current collecting structure, and the other end of the conductive elastomer is butted with the pole piece cover shells. The pole piece fixing mechanism and the button cell disclosed by the invention have the beneficial effects that the conductive elastomer is arranged between the current collecting structure and the pole piece cover shells, a good electric connection is always maintainedbetween the pole piece cover shells and the pole pieces by utilizing the elasticity of the conductive elastomer, so that the phenomenon of bad contact between the pole pieces and the pole piece covershells is prevented.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a pole piece fixing mechanism and a button battery using the pole piece fixing mechanism. Background technique [0002] Button battery, also known as button battery, refers to a battery that looks like a small button. Its size is small, and it is often used in electronic devices with low power consumption, such as small flashlights and electronic watches. According to the shape of button batteries, they can be classified into cylindrical button batteries, square button batteries and special-shaped button batteries. [0003] Button batteries are covered with current collectors on the positive and negative electrodes. The commonly used positive electrode collectors are generally made of stainless steel or stainless steel, and the negative electrode collectors are generally made of copper foil. In the existing button batteries, the positive or negative electrode covered with the ...

AI Technical Summary

Problems solved by technology

However, because the pole piece is generally formed by stamping, the stress release inside the pole piece can easily cause the pole piece to show a concave outer edge upwards. After the stamped pole piece is installed in the pole piece cover, due to the phenomenon of protruding outer edge, the As a result, the current collector cannot be in contact with the pole piece cover, or the middle of the conductive adhesive cannot be in contact with the pole piece

In addition, the surface of the pole piece cover and the pole piece of the existing button battery is smooth. When the battery is used in complex working conditions, the internal structure of the battery is easy to change, and because the battery is discharged , the positive and negative electrodes inside the battery are consumed, and the internal temperature of the battery rises during use in a high-temperature environment, and the electrode cover is easy to expand. These conditions are likely to lead to poor internal contact of the battery and affect the normal use of the battery.

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