Secondary battery and method for manufacturing the same
A conductive member is disposed on a side of the sealing plate adjacent to an electrode assembly with a first insulating member disposed therebetween. The conductive member has a conductive-member opening portion. The conductive-member opening portion of the conductive member is sealed by a deformation plate. The deformation plate is connected to a first positive-electrode current collector, which is electrically connected to positive electrode plates. A second insulating member is disposed between the deformation plate and the first positive-electrode current collector. Fixing projections and displacement prevention projections are provided on a surface of the second insulating member. The second insulating member is fixed to the first positive-electrode current collector such that the fixing projections are disposed in fixing holes in the first positive-electrode current collector. The displacement prevention projections on the second insulating member are disposed in displacement prevention holes in the first positive-electrode current collector.
1 . A secondary battery comprising:
an electrode assembly including a positive electrode plate and a negative electrode plate;
an exterior body having an opening and containing the electrode assembly;
a sealing plate that seals the opening;
a terminal that is attached to the sealing plate;
a tab electrically connected with the positive electrode plate or the negative electrode plate;
a current collecting member that electrically connects the tab to the terminal, wherein the tab extends from an end of the positive electrode plate or the negative electrode plate in a thickness direction of the sealing plate toward the sealing plate; and
an insulating member disposed between the sealing plate and the current collecting member,
wherein the sealing plate has a first through hole provided therein,
wherein the insulating member has a second through hole provided in a region of the insulating member facing the first through hole in the sealing member,
wherein the insulating member includes a rib extending toward the electrode assembly from a surface of the insulating member facing the electrode assembly, and
wherein the rib is directly adjacent to and surrounds the second through hole.
2 . A secondary battery comprising:
an electrode assembly including a positive electrode plate and a negative electrode plate;
an exterior body having an opening and containing the electrode assembly;
a sealing plate that seals the opening;
a terminal that is attached to the sealing plate;
a tab electrically connected with the positive electrode plate or the negative electrode plate;
a current collecting member that electrically connects the tab to the terminal, wherein the tab extends from an end of the positive electrode plate or the negative electrode plate in a thickness direction of the sealing plate toward the sealing plate; and
an insulating member disposed between the sealing plate and the current collecting member,
wherein the sealing plate has a first through hole provided therein,
wherein the insulating member has a second through hole provided in a region of the insulating member facing the first through hole in the sealing member,
wherein the insulating member includes a rib extending toward the electrode assembly from a surface of the insulating member facing the electrode assembly, and
wherein a distal end of the rib extends beyond a surface of the current collecting member toward the electrode assembly in the thickness direction of the sealing plate, said surface of the current collecting member directly adjacent to the rib and facing away from the sealing plate.
3 . The secondary battery according to claim 1 ,
wherein the first through hole is an electrolyte introduction hole.
4 . The secondary battery according to claim 2 , wherein the first through hole is an electrolyte introduction hole.