Patent ID: 9034496
Filing Date: 2015-05-19
Classification: H01M,Y02E

Abstract:
1. A battery unit comprising: a plurality of battery cells, each of the battery cells comprising an exterior casing and electrode terminals, electrode terminals having positive electrode terminals and negative electrode terminals, the positive electrode terminal and the negative electrode terminal being formed on an outside surface of the exterior casing of each of the battery cells; a control board having a voltage detection circuit configure to detect a voltage of each of the battery cells; a plurality of conductive members through which a voltage potential of the electrode terminals of the battery cells being transmitted to the voltage detection circuit, one end part of each of the conductive members being electrically connected to the corresponding electrode terminals of the battery cell, and the other end part of each of the conductive members being electrically connected to the voltage detection circuit; safety valves formed on a surface of the exterior casing of each of the battery cells on which the electrode terminals are formed, the safety valves configured to be opened when an internal pressure of the respective battery cells exceeds a predetermined pressure value; and a discharge duct made of resin as a passage formation member which forms a single fluid passage through which a fluid is discharged outside the battery unit when the safety valves are opened, the discharge duct comprising: wherein the safety valves are exposed to the fluid passage through the fluid inlets, wherein the conductive members are insert-molded and integrally assembled with the second part only in the discharge duct, and wherein the discharge duct further comprises exposed parts so that a part of each of the conductive members is exposed to the fluid passage formed in the discharge duct.