Connection structure of conductor and conductive module
A conductor includes a connection conductor that is directly connected to at least one of a plurality of electrode terminals of an electrode terminal group of a plurality of battery cells arranged in a same direction; a linear conductor that is connected to a battery monitoring unit configured to monitor a battery state of the battery cells; a fuse element that is indirectly connected between the connection conductor and the linear conductor, and that melts when overcurrent flows between the connection conductor and the linear conductor; and a resin mold member that has an insulation property and that includes the fuse element, a part of the connection conductor, and a part of a relay terminal.
1. A connection structure of a conductor, comprising:
a flat plate shaped bus bar that is directly or indirectly connected to at least one of a plurality of electrode terminals of an electrode terminal group of a plurality of battery cells arranged in a same direction, and the bus bar including a body having a pair of through holes, and a connection portion integrally formed with the body;
a linear conductor that is connected to a battery monitoring unit configured to monitor a battery state of the battery cells;
a fuse element that is directly connected to the connection portion and directly or indirectly connected to the linear conductor, and that melts when overcurrent flows between the connection portion and the linear conductor; and
a resin mold member that has an insulation property and that is integrally formed so that an entire surface of the fuse element and a part of the connection portion are wrapped in the resin mold member, wherein
the resin mold member is spaced away from the body of the bus bar, and overlaps with the body when viewed from a direction orthogonal to both an arranging direction of the pair of through holes and a penetration direction of the through holes,
the connection portion includes a first connection portion and a second connection portion, the first connection portion extends away from the body in a direction that intersects the arranging direction, the second connection portion extends away from the first connection portion in the arranging direction, and both of the first connection portion and the second connection portion are coplanar with the body, and
the fuse element is directly connected to the second connection portion.
2. The connection structure of the conductor according to claim 1 , wherein
the fuse element is connected to the linear conductor via a relay terminal made of metal, and
the resin mold member further wraps a part of a surface of the relay terminal.
3. The connection structure of the conductor according to claim 2 , wherein
the fuse element includes a pair of terminals and a fusible part provided between the pair of terminals, and
the second connection portion is directly connected to one of the pair of terminals, and the linear conductor or the relay terminal is connected to the other terminal.
4. A conductive module, comprising:
a plurality of conductors that correspond to at least one of electric terminals, each of the conductors including
a flat plate shaped bus bar that is directly or indirectly connected to at least one of the electrode terminals of an electrode terminal group of a plurality of battery cells arranged in a same direction, and the bus bar including a body having a pair of through holes, and a connection portion integrally formed with the body,
a linear conductor that is connected to a battery monitoring unit configured to monitor a battery state of the battery cells,
a fuse element that is directly connected to the connection portion and directly or indirectly connected to the linear conductor, and that melts when overcurrent flows between the connection portion and the linear conductor, and
a resin mold member that has an insulation property and that is integrally formed so that an entire surface of the fuse element and a part of the connection portion are wrapped in the resin mold member, wherein
the bus bars are respectively housed in a plurality of housing space units that are included in a housing case having an insulation property and that are arranged in an arranging direction of the electrode terminals,
the resin mold member is spaced away from each of the housing space units, and overlaps with the body when viewed from a direction orthogonal to both an arranging direction of the pair of through holes and a penetration direction of the through holes,
the connection portion includes a first connection portion and a second connection portion, the first connection portion extends away from the body in a direction that intersects the arranging direction, the second connection portion extends away from the first connection portion in the arranging direction, and both of the first connection portion and the second connection portion are coplanar with the body, and
the fuse element is directly connected to the second connection portion.
5. The connection structure of the conductor according to claim 3 , wherein
the fusible part has a wave shape.
6. The connection structure of the conductor according to claim 3 , wherein
a connection part between the second connection portion and the fuse element, and a connection part between the fuse element and the linear conductor are arranged in an arranging direction of the battery cells.
7. The connection structure of the conductor according to claim 1 , wherein
the fuse element is suspended to span a gap between the connection portion and the linear conductor.