Secondary battery and battery pack including secondary battery
First Claim
1. A secondary battery comprising:
- an electrode assembly;
an electrically conductive battery case accommodating the electrode assembly;
an electrode terminal electrically connected to the electrode assembly and extending out of the battery case;
a fuse part electrically connecting the battery case to the electrode assembly through the electrode terminal when not in a blown state and electrically disconnecting the battery case from the electrode assembly when transitioning to the blown state; and
a connecting bar electrically connecting the fuse part to the electrode terminal,wherein the fuse part comprises;
a fuse holder coupling to the connecting bar; and
a fuse device coupling to the fuse holder and electrically connecting the battery case to the connecting bar when not in the blown state and electrically disconnecting the battery case from the connecting bar when transitioning to the blown state, andwherein the fuse device is formed of one of a copper alloy or an alloy of zinc and tin.
2 Assignments
0 Petitions
Accused Products
Abstract
A secondary battery and a battery pack including the second battery, which includes a battery case having a polarity (e.g., positive or negative polarity) in a normal operation, thereby reducing corrosion of the battery case and facilitating a design of an external circuit. The battery case is neutralized in an abnormal operation (e.g., penetration of a nail, over discharge, and over charge), thereby improving safety and reliability of the secondary battery and the battery pack. The secondary battery includes an electrode assembly, a battery case accommodating the electrode assembly, electrode terminals electrically connected to the electrode assembly and extending out of the battery case, and a fuse part disposed between the battery case and the electrode terminal to electrically connect the battery case to the electrode terminal. The fuse part is configured to selectively electrically disconnect the battery case from the electrode terminal.
19 Citations
16 Claims
-
1. A secondary battery comprising:
-
an electrode assembly; an electrically conductive battery case accommodating the electrode assembly; an electrode terminal electrically connected to the electrode assembly and extending out of the battery case; a fuse part electrically connecting the battery case to the electrode assembly through the electrode terminal when not in a blown state and electrically disconnecting the battery case from the electrode assembly when transitioning to the blown state; and a connecting bar electrically connecting the fuse part to the electrode terminal, wherein the fuse part comprises; a fuse holder coupling to the connecting bar; and a fuse device coupling to the fuse holder and electrically connecting the battery case to the connecting bar when not in the blown state and electrically disconnecting the battery case from the connecting bar when transitioning to the blown state, and wherein the fuse device is formed of one of a copper alloy or an alloy of zinc and tin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A battery pack comprising:
-
secondary batteries, each comprising an electrically condutive battery case and an electrode terminal extending out of the battery case, the electrode terminal being electrically connected to an electrode assembly within the battery case; bus bars electrically connecting the secondary batteries in series or in parallel, each of the bus bars electrically connecting the electrode terminal of one of the secondary batteries to one or more others of the secondary batteries; and a fuse part electrically connecting the battery case of a secondary battery of the secondary batteries to the electrode assembly of the secondary battery through one of the bus bars when not in a blown state and electrically disconnecting the battery case of the secondary battery from the electrode assembly of the secondary battery when transitioning to the blown state, wherein the fuse part comprises; a fuse holder coupling to the one of the bus bars; and a fuse device coupling to the fuse holder and electrically connecting the battery case of the secondary battery to the one of the bus bars when not in the blown state and electrically disconnecting the battery case of the secondary battery from the one of the bus bars when transitioning to the blown state, and wherein the fuse device is formed of one of a copper alloy or an alloy of zinc and tin. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
-
Specification