| CPC H01M 50/46 (2021.01) [H01M 10/049 (2013.01); H01M 50/184 (2021.01); H01M 50/466 (2021.01); H01M 50/469 (2021.01); H01M 50/538 (2021.01)] | 12 Claims |
|
1. A battery comprising:
an outer package that comprises:
a bottom wall;
a pair of first side walls extending from the bottom wall and being mutually opposed;
a pair of second side walls extending from the bottom wall and being mutually opposed; and
an opening part opposed to the bottom wall;
a sealing plate that seals the opening part;
electrode bodies that are accommodated in the outer package and that each electrode body comprises a positive electrode and a negative electrode;
a positive electrode terminal and a negative electrode terminal that are attached to the sealing plate;
a positive electrode electrical collector body that electrically connects the positive electrode of the electrode body and the positive electrode terminal; and
a negative electrode electrical collector body that electrically connects the negative electrode of the electrode body and the negative electrode terminal,
wherein the electrode body comprises:
an electrode body main body part;
a positive electrode tab group that comprises a plurality of positive electrode tabs protruding from a first end part of the electrode body main body part in a first direction along the first side wall; and
a negative electrode tab group that comprises a plurality of negative electrode tabs protruding from a second end part of the electrode pair main body part in the first direction, the second end part being different from the first end part,
the positive electrode tab group is folded and bent to arrange respective tip ends of the positive electrode tabs configuring the positive electrode tab group along the second side wall,
a portion of the folded and bent positive electrode tabs is joined to the positive electrode electrical collector body,
the negative electrode tab group is folded and bent to arrange respective tip ends of the negative electrode tabs configuring the negative electrode tab group along the second side wall,
a portion of the folded and bent negative electrode tabs is joined to the negative electrode electrical collector body, and
a spacer is provided between the electrode body main body part and the second side wall that regulates movement of the electrode body,
the spacer comprises spacer main body parts and a coupled part which couples the spacer main body parts,
each spacer main body part is arranged between the positive electrode tab group of each electrode body and the positive electrode electrical collector body, or between the negative electrode tab group of each electrode body and the negative electrode electrical collector body,
the coupled part mutually couples one end of respective spacer main body parts.
|