Power storage device, power storage system, electronic apparatus, electric vehicle, and electric power system

Patent metadata

Field	Value
Publication number	US-2016149177-A1
Application number	US-201414900842-A
Country	US
Kind code	A1
Filing date	May 19, 2014
Priority date	Jul 2, 2013
Publication date	May 26, 2016
Grant date	—

Abstract

A power storage device includes an outer casing and two battery units housed in the outer casing. Each battery unit includes a battery casing formed with a top casing and a bottom casing. The battery casing houses a battery block group in which battery lines are arranged in parallel in a direction substantially perpendicular to the battery line extending direction, and are arranged like stacked straw bags. The battery casing also houses partition plates that are inserted between adjacent battery lines facing one another, and are secured between the top casing and the bottom casing.

First claim

1 . A power storage device comprising:
an outer casing; and two or more battery units housed in the outer casing, the battery units each including: a battery casing formed with a top casing having one or more first holes formed in a bottom surface portion thereof and a bottom casing having one or more second holes formed in a bottom surface portion thereof; a battery block group housed in the battery casing, a plurality of battery lines each formed with a plurality of battery cells arranged in a line are arranged in parallel in a direction substantially perpendicular to an extending direction of the battery lines, and are arranged like stacked straw bags; and a partition plate housed together with the battery block group in the battery casing, the partition plate being inserted between adjacent ones of the battery lines facing each other, one or more first protrusions being formed on an upper surface of the partition plate, one or more second protrusions being formed on a lower surface of the partition plate, the one or more first protrusions being engaged with the one or more first holes, the one or more second protrusions being engaged with the one or more second holes.

2 . The power storage device according to claim 1 , wherein the two or more battery units are vertically housed in the outer casing and are stacked in two or more stages in a horizontal direction, the bottom surface portions facing in the horizontal direction.

3 . The power storage device according to claim 2 , further comprising
a joining member housed in the battery casing and joined to all terminal surfaces of the battery cells constituting at least one of the battery lines.

4 . The power storage device according to claim 3 , further comprising
a first board housed in the outer casing and secured to one wall surface of the battery casing, a protruding end portion of the joining member being joined to the first board, the protruding end portion protruding in the battery line extending direction, a circuit including at least a voltage control circuit being mounted on the first board.

5 . The power storage device according to claim 4 , further comprising
a second board and a third board housed in the outer casing, the second board and the third board being formed as structures independent of the first board, a circuit including at least a current breaking element being mounted on the second board, a circuit including at least an output terminal being mounted on the third board.

6 . The power storage device according to claim 5 , wherein
one or more third protrusions are formed on a first surface of the outer casing, one or more fourth protrusions are formed on a second surface of the outer casing, one or more third holes are further formed in the bottom surface portion of the bottom casing of one or more of the battery units facing the first surface, one or more third holes are further formed in the bottom surface portion of the bottom casing of one or more of the battery units facing the second surface, the one or more third protrusions are engaged with the one or more third holes, to secure the one or more of the battery units to the first surface, and the one or more fourth protrusions are engaged with the one or more fourth holes, to secure the one or more of the battery units to the second surface.

7 . The power storage device according to claim 6 , wherein
one or more fifth protrusions are further formed on the first surface, one or more sixth protrusions are further formed on the second surface, one or more fifth holes are formed in the second board, one or more sixth holes are formed in the third board, the one or more fifth protrusions are engaged with the one or more fifth holes, to further secure the second board to the first surface of the outer casing, and the one or more sixth protrusions are engaged with the one or more sixth holes, to further secure the third board to the second surface.

8 . The power storage device according to claim 7 , wherein
a board group including the first board, the second board, and the third board is housed in a space between one wall surface of the battery casing and a third surface of the outer casing, the third surface facing the one wall surface, and the boards in the board group are electrically connected by a plate-like connecting member.

9 . The power storage device according to claim 1 , wherein
the battery lines are formed with first battery lines and second battery lines alternately arranged in parallel in a direction substantially perpendicular to the extending direction of the battery lines, each of the first battery lines being formed with the battery cells linearly arranged in a close contact state, each of the second battery lines having a space of the size of one battery cell, the space being located between two sets of battery cells linearly arranged in a close contact state, the top casing further includes a structural member inserted into the space of the size of one battery cell, and the bottom casing further includes another structural member inserted into the space of the size of one battery cell.

10 . The power storage device according to claim 9 , wherein
one or more seventh protrusions are formed on one surface of the outer casing, one or more seventh holes are formed in a surface of the another structural member, the surface of the another structural member facing the one surface of the outer casing, and the one or more seventh protrusions are engaged with the one or more seventh holes in the another structural member.

11 . The power storage device according to claim 2 , further comprising
an insulating member interposed between one bottom surface portion of the top casing of one of the two or more battery units and another bottom surface portion of the top casing of another one of the two or more battery units, the one of the two or more battery units facing the another one of the two or more battery units.

12 . The power storage device according to claim 11 , wherein
the insulating member includes a first resin plate placed on the one bottom surface portion and a second resin plate placed on the another bottom surface portion, the first resin plate and the second resin plate being in close contact with each other, the first resin plate has a protrusion and/or a recess in a surface in close contact with the second resin plate, the second resin plate has a protrusion and/or a recess in a surface in close contact with the first resin plate, the protrusion and/or the recess of the first resin plate is engaged with the protrusion and/or the recess of the second resin plate.

13 . The power storage device according to claim 1 , wherein the top casing further has a hole for inserting a temperature detecting element into the battery casing.

14 . The power storage device according to claim 13 , wherein the partition plate has a cut-away portion for maintaining a space accommodating the temperature detecting element, the hole being located below the hole in a vertical direction.

15 . A power storage system in which the power storage device of claim 1 is charged by a power generating unit configured to generate electric power from renewable energy.

16 . A power storage system comprising
the power storage device of claim 1 , the power storage system supplying electric power to an electronic apparatus connected to the power storage device.

17 . An electronic apparatus receiving an electric power supply from the power storage device of claim 1 .

18 . An elec

Assignees

• Sony Corp

Inventors

• Sugeno Naoyuki
• Aoyama Tsutomu
• Adachi Tatsuya

Classifications

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• H01M10/425 Primary

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H02J7/35

  with light sensitive cells · CPC title

• H01M2220/10

  Batteries in stationary systems, e.g. emergency power source in plant · CPC title