POWER STORAGE DEVICE

• US 20200136114A1
• Filed: 10/23/2019
• Published: 04/30/2020
• Est. Priority Date: 10/24/2018
• Status: Active Application

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: KONDO, Tadahiro, MORIOKA, Satoshi, FUJIWARA, Nobuyoshi
• Application Number:
  US16/661,397
• Publication Number:
  US 20200136114A1
• Time in Patent Office: Days
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/291 characterised by their shape
• CPC Class Codes: H01M 50/293 characterised by the material
• CPC Class Codes: H01M 50/446 Composite material consisting of a mixture of organic and inorganic materials
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A power storage device includes a first power storage cell and a second power storage cell that are spaced from each other in a predetermined direction and located so that a side surface of the first power storage cell and a side surface of the second power storage cell face each other, a divider that is made of a thermoplastic resin and interposed between the side surface of the first power storage cell and the side surface of the second power storage cell, and a spacer that is made of an inorganic material and disposed to pass through the divider in the predetermined direction.

Claims

1. A power storage device comprising:

a first power storage cell and a second power storage cell, the first power storage cell and the second power storage cell being spaced from each other in a predetermined direction and located so that a side surface of the first power storage cell and a side surface of the second power storage cell face each other;

a divider made of a thermoplastic resin and interposed between the side surface of the first power storage cell and the side surface of the second power storage cell; and

a spacer made of an inorganic material and disposed to pass through the divider in the predetermined direction.

2. The power storage device according to claim 1, wherein

the divider defines an opening passing through the divider in the predetermined direction, and

the spacer is disposed inside the opening by press-fit.

3. The power storage device according to claim 1, wherein the spacer is columnar in shape extending in the predetermined direction.

4. The power storage device according to claim 1, wherein

the side surface of the first power storage cell has a central portion and an outer circumferential portion, the central portion being located at a center of the side surface of the first power storage cell in an in-plane direction orthogonal to the predetermined direction, the outer circumferential portion defining an outer circumference of the side surface of the first power storage cell in the in-plane direction, and

a first distance between the spacer and the central portion in a reference direction is shorter than a second distance between the spacer and the outer circumferential portion in the reference direction, the reference direction being a direction of a line connecting the spacer and the central portion.

5. The power storage device according to claim 1, wherein the divider comprises a plurality of the spacers.

6. The power storage device according to claim 5, wherein the plurality of the spacers are located to satisfy a relationship of point symmetry about a predetermined location in a plane orthogonal to the predetermined direction or a relationship of line symmetry about a predetermined straight line in the plane orthogonal to the predetermined direction.