CROSS REFERENCE TO RELATED APPLICATION

The present application claims priority of Korean Patent Application No. 10-2019-0166032 filed on Dec. 12, 2019, the entire contents of which is incorporated herein for all purposes by this reference.

TECHNICAL FIELD

The present disclosure relates to a battery storage device for an electric vehicle having a battery pack embedded therein and provided with a cooling device configured to cool the battery pack.

BACKGROUND OF THE DISCLOSURE

Recently, interest in eco-friendly vehicles has increased due to causes such as an environmental problem and a high oil price, and an electric vehicle (EV) for allowing a vehicle to run by using electrical energy has been variously developed.

Such an electric vehicle includes a battery powered EV, a fuel cell EV using a fuel cell as an electric motor, a hybrid EV using the electric motor and an engine together, and the like.

In particular, the electric vehicle is provided with a battery module configured to store electrical energy, and the battery module accommodates a plurality of battery cell units in a battery case. Since such a battery case is large in volume and weight, it is important to secure a mounting space in a vehicle body in order to mount the battery case to the vehicle body. In addition, it is required to cool the battery module as high temperature heat is generated when the battery module is driven, but the optimal design of the battery case considering the mounting space of the vehicle body and the cooling of the battery module has not been performed.

The foregoing explained as the background is intended merely to aid in the understanding of the background of the present disclosure, and is not intended to mean that the present disclosure falls within the purview of the related art that is already known to those skilled in the art.

SUMMARY OF THE DISCLOSURE

The present disclosure is intended to solve the above problem, and an object of the present disclosure is to provide a battery storage device for an electric vehicle, which prepares a battery case in a vehicle floor, thereby securing an interior space, and cools a battery pack by using interior air, thereby simplifying a cooling structure and saving a manufacturing cost.

A battery storage device for an electric vehicle according to the present disclosure for achieving the object includes a battery case accommodating a battery pack in an internal space of the battery case, the battery case including an air suction port through which an interior air is sucked and an air discharge port to which the air having cooled the battery pack is discharged, and including a cooling device connected to the air discharge port to circulate the interior air to the internal space; and a battery cover covering the battery case, having an inflow hole matched with the air suction port when mounted to the battery case, and provided with a first part noise reduction member disposed between the cooling device and the inflow hole to block the driving sound generated when the cooling device is driven from flowing into the interior through the inflow hole.

As the battery case is disposed below a back seat of the vehicle and extends in a transverse direction of the vehicle, the internal space including the battery pack extends in the transverse direction of the vehicle.

The air discharge port connected to the cooling device is disposed at one side of a lower side of the battery case, and the air suction port is disposed at another side of an upper side of the battery case to be spaced apart from the air discharge port.

The internal space of the battery case has a lower flow path connected to the air discharge port below the battery pack and an upper flow path connected to the air suction port above the battery pack around the battery pack, and the upper flow path is formed to be inclined upward from one side to another side facing the air suction port.

A gap space is disposed between an upper end of the battery case and the battery cover, and a first noise reduction member is interposed in the gap space between the upper end of the battery case and the battery cover.

The first noise reduction member is bent to cover the front end of the battery case facing the front of the vehicle at an upper end of the battery case.

The air suction port includes plural portions, the plural portions having areas being different from each other and increasing in a direction away from the air discharge port provided with the cooling device.

The battery case is provided with a suction duct connected to be communicated with the air suction port and extending to the interior to guide the interior air to the internal space.

The suction duct is disposed at a center of the vehicle in a transverse direction on a vehicle floor on which the battery case is disposed, and a suction port through which the interior air is introduced faces the front of the vehicle.

The suction port includes a grill part having a plurality of holes by a plurality of ribs crossing vertically and laterally.

The battery case further includes an electrical component, and the electrical component is disposed to be partitioned from the internal space in which the battery pack is accommodated, and the battery cover covers the battery case including the internal space and the electrical component, and includes a second noise reduction member for an electrical component to cover the electrical component to block a noise generated by the electrical component from flowing into the interior.

The second noise reduction member for the electrical component is bent to cover a front end of the battery case facing the front of the vehicle at an upper end of the electrical component.

The battery storage device for the electric vehicle composed of the structure as described above prepares the case on the vehicle floor, thereby securing the interior space, and cools the battery module by using the interior air, thereby simplifying the cooling structure and saving the manufacturing cost. In addition, noises generated by the cooling device and the electrical component are blocked from flowing into the interior, thereby preventing the occurrence of the passenger's discomfort feeling caused by generating the noises.

