A lithium ion battery according to the present invention comprises a positive electrode, a negative electrode, a positive electrode lead that is connected to the positive electrode, an insulation tape that covers the positive electrode lead, and an electrolyte solution. The insulation tape comprises a base material layer that is mainly composed of an organic material, and a filler layer that is provided on the base material layer; the filler layer contains an oxide compound of an alkaline earth metal; and the electrolyte solution contains fluorine.

This non-aqueous electrolyte secondary battery comprises an electrode body in which a first separator, a positive electrode plate, a second separator, and a negative electrode plate are layered and coiled for 10 or more turns. The electrode body includes: a flat section in which the outer peripheral surface is flat; and two curved surface sections which are disposed at both ends in a first direction of the flat section and in which the outer peripheral surface is curved. The non-aqueous electrolyte secondary battery includes: a winding-end tape that is adhered to the outermost peripheral surface of the electrode body; and a positive electrode protective tape that is adhered to a winding-start-side end section on the inner peripheral side of the positive electrode plate. The winding-end tape is disposed on one of the two curved surface sections.

A button-type secondary battery including an electrode assembly having a first and second electrode tabs; a lower can having an accommodation part, in which the electrode assembly is accommodated and to which the first electrode tab is connected, and a flange part on an outer circumferential surface of the accommodation part; an upper cap on the accommodation part covering the accommodation part and a curl part on an outer circumferential surface of the cover part; a terminal member coupled to the upper cap and connected to the second electrode tab; and an insulating member configured to insulate the terminal member and the upper cap from each other and seal a gap between the terminal member and the upper cap. The flange part and the curl part are coupled to each other in a seaming manner to seal a gap between the lower can and the upper cap.

A button-type secondary battery including an electrode assembly having a first and second electrode tabs; a lower can having an accommodation part, in which the electrode assembly is accommodated and to which the first electrode tab is connected, and a flange part on an outer circumferential surface of the accommodation part; an upper cap on the accommodation part covering the accommodation part and a curl part on an outer circumferential surface of the cover part; a terminal member coupled to the upper cap and connected to the second electrode tab; and an insulating member configured to insulate the terminal member and the upper cap from each other and seal a gap between the terminal member and the upper cap. The flange part and the curl part are coupled to each other in a seaming manner to seal a gap between the lower can and the upper cap.

A battery includes a negative electrode active material layer, a positive electrode active material layer. The negative electrode active material layer includes a first portion and a second portion including a first surface and a first end. The first surface is connected to the first portion by using a first connection part. A thickness of the second portion decreases from the first connection part to the first end. The positive electrode active material layer includes a third portion and a fourth portion including a second surface and a second end. The first surface is at least partially opposite to the second surface, and the second surface is connected to the third portion by using a second connection part. A thickness of the fourth portion gradually decreases from the second connection part to the second end. The first connection part is located between the second connection part and the second end.

A battery includes a negative electrode active material layer, a positive electrode active material layer. The negative electrode active material layer includes a first portion and a second portion including a first surface and a first end. The first surface is connected to the first portion by using a first connection part. A thickness of the second portion decreases from the first connection part to the first end. The positive electrode active material layer includes a third portion and a fourth portion including a second surface and a second end. The first surface is at least partially opposite to the second surface, and the second surface is connected to the third portion by using a second connection part. A thickness of the fourth portion gradually decreases from the second connection part to the second end. The first connection part is located between the second connection part and the second end.

The present invention relates to a coating tape and a method of manufacturing the same. More particularly, the present invention relates to a coating tape in which an inorganic layer formed on one surface or both surfaces of an electrode is formed in the form of an adhesive tape so as to be attached to a battery, and a method of manufacturing the same.

The present invention relates to a coating tape and a method of manufacturing the same. More particularly, the present invention relates to a coating tape in which an inorganic layer formed on one surface or both surfaces of an electrode is formed in the form of an adhesive tape so as to be attached to a battery, and a method of manufacturing the same.

Provided are a secondary battery and a battery pack including the secondary battery. A sealing plate has a positive electrode terminal attachment hole. A positive electrode terminal penetrates the positive electrode terminal attachment hole. An external conductive member is connected to a portion of the positive electrode terminal located on the battery outer side with respect to the sealing plate. The conduction path between a positive electrode plate and the positive electrode terminal is provided with a current interrupting mechanism. A first insulating member made of resin is disposed between the sealing plate and the positive electrode terminal. A second insulating member having higher thermal resistance than the first insulating member is disposed between the external conductive member and the sealing plate.

A secondary battery includes a positive electrode, a negative electrode, an electrolytic solution, and an insulating member. The positive electrode includes a positive electrode current collector and a positive electrode active material layer. The negative electrode is opposed to the positive electrode. The electrolytic solution includes a chain carboxylic acid ester. The insulating member includes an adhesive layer including a rubber-based polymer compound. The positive electrode includes an exposed part in which the positive electrode current collector is exposed. The insulating member is adhered to the exposed part via the adhesive layer on a side opposed to the negative electrode.