Battery Cell and Battery Device

A battery device comprising:

• a housing;
• and
• a plurality of battery cells arranged inside the housing and electrically connected to each other,
• wherein at least one of the plurality of battery cells includes:
• a cell case;
• a cathode terminal disposed on one outer side of the cell case and insulated from the cell case;
• an anode terminal disposed on the other outer side of the cell case and insulated from the cell case, the anode terminal being spaced apart from the cathode terminal;
• a cell material portion disposed inside the cell case and having a cathode tab electrically connected to the cathode terminal and an anode tab electrically connected to the anode terminal;
• a fuse electrically connected to the cathode terminal and the cathode tab, the fuse being opened during an operation to electrically disconnect the cathode terminal and the cathode tab;
• and
• a connection portion electrically connecting the cathode tab of the cell material portion and the cell case.

A battery cell comprising:

• a cell case;
• a cell material portion, insulated from the cell case and disposed inside the cell case, having a cathode tab disposed on one side and an anode tab disposed on the other side, opposite to the one side;
• a cathode current collector connected to the cell case and disposed on the cathode tab;
• an anode current collector insulated from the cell case and disposed on the anode tab;
• a cathode cap connected to the cell case, disposed on one side of the cell case, and covering the cathode current collector;
• a cathode terminal inserted into a through-hole formed in the cathode cap;
• a fuse disposed between an inner surface of the cathode terminal and the cathode current collector;
• and
• a connection portion electrically connecting the cathode current collector and the cell case.

A battery cell comprising:

• a cell case;
• a cell material portion, insulated from the cell case and disposed inside the cell case, having an anode tab disposed on one side thereof and a cathode tab disposed on the other side thereof, opposite to the one side;
• an anode current collector connected to the cell case and disposed on the anode tab;
• a cathode current collector insulated from the cell case and disposed on the cathode tab;
• an anode cap connected to the cell case, disposed on one side of the cell case, and covering the anode current collector;
• an anode terminal inserted into a through-hole formed in the anode cap;
• a fuse disposed between an inner surface of the anode terminal and the anode current collector;
• and
• a connection portion electrically connecting the anode current collector and the cell case.