Battery Shelf Assembly, Power Storage System, and Assemblying Method of Battery Shelf Assembly

1 . A battery shelf assembly, comprising:

a plurality of battery units having a storage battery;

a battery shelf accommodating the battery units, configured such that the battery units are mounted or dismounted by sliding movement in the battery shelf; and

a power connector connecting the battery unit and the battery shelf so that power of the battery unit can be output, wherein

the power connector comprises:

a first connector member disposed at an electrode terminal of the battery unit;

a second connector member, disposed on the battery shelf, configured to connect with the first connector member; and

a floating structure that absorbs a position gap between the first and second connector members.

2 . The battery shelf assembly according to claim 1 , wherein the floating structure absorbs position gap (i) in at least one of vertical direction, left-right direction, and an oblique direction, or (ii) in at least one of vertical direction, left-right direction, oblique direction, and front-back direction.

3 . The battery shelf assembly according to claim 1 or 2 , wherein

the first connector member of the battery unit is non-movable member, and

the second connector member of the battery shelf is movable member.

4 . The battery shelf assembly according to claim 3 , wherein the movable member has a plug part, and the non-movable member has a recessed part into which the plug part is inserted, and a taper part is formed at least at distal end of the plug part.

5 . The battery shelf assembly according to claim 1 , wherein the battery unit has an electronic circuit, the battery shelf assembly further comprising:

a signal connector exchanging electrical signals with the electronic circuit, the signal connector comprising:

a first signal connector member disposed on the battery unit;

a second signal connector member disposed on the battery shelf; and

a floating structure that absorbs a position gap between both connector members.

6 . The battery shelf assembly according to claim 5 , wherein the signal connector and the power connector are disposed at a predetermined distance.

7 . The battery shelf assembly according to claim 1 , further comprising:

an electrode terminal, formed in a shelf rear surface, for outputting power of the battery shelf assembly as a whole, said electrode terminal has a rear connector member which, with the other connector, configures a floating connector.

8 . The battery shelf assembly according to claim 7 , wherein the rear connector is a non-movable member.

9 . A power storage system comprising:

at least one battery shelf assembly according to claim 1 ; and

a rack in which the battery shelf assembly is accommodated.

10 . A method of assembling a battery shelf assembly by mounting battery units having a storage battery into a battery shelf, wherein the battery shelf assembly comprising a power connector having a first connector member disposed at an electrode terminal of the battery unit, a second connector member, disposed on the battery shelf, configured to connect with the first connector member; and a floating structure that absorbs a position gap between the first and second connector members, the method comprising the steps of:

(a) inserting the battery units by sliding into the battery shelf; and

(b) connecting the first and the second connector with each other while absorbing position gap in relative positions of the first and second connectors by the power connector.