In-Vehicle Electric Storage Device

An in-vehicle electric storage device, comprising:

• a battery block including a metal casing and a plurality of battery cells accommodated in the metal casing;
• a control unit including a metal cabinet and a circuit board accommodated in the metal cabinet on which an electronic component is mounted, the control unit being set up on a top side of the battery block and monitoring a physical state of each of the plurality of the battery cells;
• wherein
• the cabinet includes a case having a bottom plate and an open top surface and a cover that closes the open top surface of the case,
• the case has an internal boss and an external boss on the bottom plate, the internal boss protruding toward inside of the case from a top side of the bottom plate and the external boss protruding toward outside the case from a bottom side of the bottom plate,
• the circuit board is set up on a top side of the internal boss, and
• a top side of the casing is provided with a depressed portion in which the external boss is accommodated.