公开(公告)号：US20230112329A1

公开(公告)日：2023-04-13

申请号：US17905257

申请日：2021-03-09

Applicant: FDK CORPORATION

Inventor： Masaru Takasu

IPC: H01M50/586 ,  H01M4/24 ,  H01M50/538

Abstract: An alkaline storage battery of the present invention includes: an electrode group that includes a positive electrode, a negative electrode, and a separator located between the positive electrode and the negative electrode, which are stacked on top of each other; an outer can that is bottomed cylindrical shape having an opening at the top; a sealing body that seals the outer can; and a positive terminal electrically connected to the sealing body. The positive electrode includes a positive electrode body and a positive electrode protrusion protruding from a portion of the positive electrode body toward the sealing body to connect electrically to the sealing body. The negative electrode includes a negative electrode body and a negative electrode protrusion protruding from a portion of the negative electrode body toward the sealing body and terminating between the sealing body and the negative electrode body. The positive electrode and the negative electrode have a positive electrode active material and a negative electrode active material, respectively, in portions facing each other with the separator therebetween.