Abstract: An electrode plate manufacturing apparatus of the present invention includes an original plate support portion that supports an original plate of an electrode plate coated with an electrode active material, a first cutting blade that forms a linear first cutting portion in the original plate, a first support substrate, which is arranged to face the original plate support portion, having the first cutting blade fixed thereto, a second cutting blade that forms a linear second cutting portion in the original plate, a second support substrate which is arranged to face the original plate support portion, having the second cutting blade fixed thereto, and a driving portion that drives the first and second support substrates, wherein, when the first support substrate is driven by the driving portion, the first cutting portion is formed by the first cutting blade.

Abstract: An electrode plate manufacturing device of the invention includes: an original plate support portion that supports an original plate of an electrode plate; a first pressing portion; a frame-shaped punching-out blade; a support substrate; and a driving portion, wherein the first pressing portion is disposed at in an area inside of the frame shape of the punching-out blade and with a predetermined gap from the punching-out blade, and when the support substrate advances toward the original plate support portion, the first pressing portion presses the original plate and the punching-out blade cuts the original plate in accordance with the frame shape.

Abstract: In welding between a tab bundle and lead, the outer edge of a lead on the electrode side cannot be connected to the tab bundle, even though the tab bundle extended from the electrode stacked body and a part of an end portion of the lead are connected. This leads to the outer edge bended up, damaging the tab and causing contact failure between the electrode plate and the electrode terminal. With the battery of the present invention, such contact failure can be prevented. It includes an electrode stacked body (10) and a lead (17) having the first end which is connected to a tab bundle (15), wherein a first end of the lead (17) is connected to the tab bundle (15) by ultrasonic welding so as to include at least an outer edge (17a) of the lead (17).

Abstract: Disclosed is a battery cell in which a first angle that is the angle between a collector (313) and an inclined face (316) that ranges from an end portion of the collector (313) to a surface (311) of a first electrode active material (314) is larger than a second angle that is the angle between the collector (313) and an inclined face (317) that ranges from the end portion of the collector (313) to a surface (312) of a second electrode active material (315).

Abstract: A battery includes: an electrode terminal that includes a fastening member; and an electrode plate that includes an electrode tab provided with a through-hole. The through-hole is a part of an outer shape of the electrode plate, and the electrode terminal and the electrode plate are electrically connected to each other through the through-hole by the fastening member.