Battery device, battery unit, and method of installing battery device

1. A battery device comprising:

a battery frame; and

a battery module disposed on the battery frame,

wherein

the battery frame comprises:

a base member;

a slide base being disposed on an upper surface of the base member and being formed in a rectangular shape defined by a pair of first sides extending in a first direction and a pair of second sides extending in a second direction in a plan view;

a plurality of metal springs being mounted on an upper surface of the slide base at intervals along the first direction of the slide base, and being extensible in a vertical direction;

a support plate being connected to upper sides of the plurality of springs and having an upper surface on which the battery module is supported; and

a stopper disposed at a position between an upper surface of the slide base and a lower surface of the support plate and different from positions where the plurality of springs is disposed,

wherein the stopper is not in contact with the support plate when the plurality of springs is in an initial state, and is in contact with the support plate when the plurality of springs is compressed by a predetermined length from the initial state.

2. The battery device according to claim 1 , wherein

the battery frame further comprises a plurality of metal bands fixing the battery module to the support plate,

each of the plurality of metal bands has one end connected to one of the pair of first sides and the other end connected to the other of the pair of first sides, and

the battery module is held between the plurality of metal bands and the support plate.

3. The battery device according to claim 1 , wherein

the battery frame further comprises a buffer member being disposed between a lower surface of the battery module and the upper surface of the support plate, and

the buffer member is constituted of an incombustible material.

4. The battery device according to claim 1 , wherein

the battery frame further comprises a positioning member being disposed to encircle an outer periphery of the upper surface of the support plate and to position the battery module with respect to the support plate in a horizontal direction, and

the positioning member comprises:

a first portion being in contact with the support plate; and

a second portion being bent from the first portion and extending upward, the second portion being in contact with a side surface of the battery module.

5. A battery unit comprising:

a plurality of the battery frames according to claim 1 , the plurality of the battery frames being arranged at intervals in the vertical direction and arranged at intervals along at least one of the first direction and the second direction; and

a plurality of battery modules,

wherein

each of the plurality of battery modules is placed on a corresponding one of the plurality of battery frames.

6. A method of installing the battery device according to claim 1 , the method comprising:

placing the battery module on the battery frame at a first location;

conveying the battery frame on which the battery module is placed from the first location to a second location in a state where the stopper is not disposed between the slide base and the support plate;

installing the battery frame on which the battery module is placed at the second location; and

disposing the stopper between the slide base and the support plate after installing the battery frame at the second location.