Electrical storage unit

Patent metadata

Field	Value
Publication number	US-9478362-B2
Application number	US-201013377871-A
Country	US
Kind code	B2
Filing date	Feb 24, 2010
Priority date	Jun 26, 2009
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

A plurality of electrical storage elements ( 11 ) are electrically connected to each other, and parts of the peripheral surfaces of the electrical storage elements ( 11 ) contained in concave surfaces ( 29 ) are joined to the concave surfaces ( 29 ) with double-sided adhesive tape ( 35 ), so that the electrical storage elements ( 11 ) can be firmly fixed to a holder ( 27 ), and heat can be efficiently transferred from the electrical storage elements ( 11 ) to the holder ( 27 ) through the double-sided adhesive tape ( 35 ).

First claim

The invention claimed is:

1. An electrical storage unit, comprising:
a plurality of cylindrically-shaped electrical storage elements electrically connected to each other and arranged in a plurality of rows, the plurality of cylindrically-shaped electrical storage elements each having a peripheral surface, the peripheral surface being an electrode;
a single-piece rectangular parallelepiped holder formed to have plane symmetry and being a solid metallic body, the single-piece rectangular parallelepiped holder arranged only between two rows of the cylindrically-shaped electrical storage elements and having two major outside surfaces and a plurality of substantially identical arc-shaped concave surfaces on each of the two major outside surfaces opposing each other, the arc-shaped concave surfaces extending substantially parallel in a same direction along each of the two major outside surfaces continuously from a first end of the single-piece rectangular parallelepiped holder to a second end of the single-piece rectangular parallelepiped holder opposite the first end, wherein the first end of the single-piece rectangular parallelepiped holder corresponds to a first end of the cylindrically-shaped electrical storage elements and the second end of the single-piece rectangular parallelepiped holder corresponds to a second end of the cylindrically-shaped electrical storage elements,
wherein each of the two major outside surfaces include an equal number of the plurality of arc-shaped concave surfaces, each of the plurality of arc-shaped concave surfaces is configured to contain a part of the peripheral surface of one of the cylindrically-shaped electrical storage elements that extends from a vicinity of a first end of the cylindrically-shaped electrical storage elements to a vicinity of a second end of the cylindrically-shaped electrical storage elements in a direction of a longitudinal axis of the cylindrically-shaped electrical storage elements, and the plurality of arc-shaped concave surfaces are substantially semi-circular in shape;
a fix plate placed opposite one of the major outside surfaces and placed only on an outer side of the cylindrically-shaped electrical storage elements and attached to the single-piece rectangular parallelepiped holder so as to hold a row of the plurality of cylindrically-shaped electrical storage elements between the fix plate and the single-piece rectangular parallelepiped holder; and
a first joining material placed only between the part of the peripheral surface of each of the cylindrically-shaped electrical storage elements and the plurality of arc-shaped concave surfaces of the single-piece rectangular parallelepiped holder to join the cylindrically-shaped electrical storage element and the single-piece rectangular parallelepiped holder, the first joining material being a double-sided adhesive tape which comprises an insulating material and a thermal conductive filler having insulation properties, the double-sided adhesive tape having a thickness not smaller than a difference between a radius of the concave surface of the single-piece rectangular parallelepiped holder and a radius of the cylindrically-shaped electrical storage element, and
wherein an entire peripheral surface of each of the cylindrically-shaped electrical storage elements is covered with the single-piece rectangular parallelepiped holder or the fix plate.

2. The electrical storage unit according to claim 1 , wherein the fix plate is made of an insulating material having elasticity, and has an arc-shaped concave surface for containing another part of the peripheral surface of the cylindrically-shaped electrical storage element.

3. The electrical storage unit according to claim 1 , wherein the fix plate is made of metal and has an arc-shaped concave surface for containing another part of the peripheral surface of the cylindrically-shaped electrical storage element, and
the electrical storage unit further comprises a second joining material which is made of an insulating material and is placed between the peripheral surface of the cylindrically-shaped electrical storage element and the concave surface of the fix plate to join the cylindrically-shaped electrical storage element and the fix plate.

4. The electrical storage unit according to claim 3 , wherein the second joining material is double-sided adhesive tape which comprises an insulating material and has a thickness not smaller than a difference between a radius of the concave surface of the fix plate and the radius of the cylindrically-shaped electrical storage element.

5. The electrical storage unit according to claim 1 , wherein the first joining material is formed so as to be non-uniform in thickness when the cylindrically-shaped electrical storage element is fixed by the single-piece rectangular parallelepiped holder and the fix plate.

6. The electrical storage unit according to claim 4 , wherein the second joining material has adhesive portions on two surfaces thereof, the adhesive portion containing a thermal conductive filler.

7. The electrical storage unit according to claim 6 , wherein the second joining material is formed so as to be non-uniform in thickness when the cylindrically-shaped electrical storage element is fixed by the single-piece rectangular parallelepiped holder and the fix plate.

8. The electrical storage unit according to claim 1 , wherein the fix plate has a fin formed on an outer wall surface thereof.

9. The electrical storage unit according to claim 1 , wherein the fix plate has an elastic portion formed on at least a portion thereof, the portion contacting the cylindrically-shaped electrical storage element.

10. The electrical storage unit according to claim 1 , wherein the fix plate includes a bottom plate closing a longitudinal end of each of the plurality of arc-shaped concave surfaces of the fix plate.

11. The electrical storage unit according to claim 10 , wherein the bottom plate is integrally formed with the fix plate and is configured to shield the plurality of cylindrically-shaped electrical storage elements from impurities.

12. The electrical storage unit according to claim 10 , wherein the bottom plate is spaced from the plurality of cylindrically-shaped electrical storage elements such that the bottom plate does not directly contact an end of the cylindrically-shaped electrical storage elements.

13. An electrical storage unit, comprising:
a plurality of cylindrically-shaped electrical storage elements electrically connected to each other and arranged in a plurality of rows;
a single-piece rectangular parallelepiped holder formed to have plane symmetry and being a solid metallic body, the single-piece rectangular parallelepiped holder arranged only between two rows of the cylindrically-shaped electrical storage elements and having two major outside surfaces, and a plurality of substantially identical arc-shaped concave surfaces on each of the two major outside surfaces opposing each other, the arc-shaped concave surfaces extending substantially parallel in a same direction along each of the two major outside surfaces continuously from a first end of the single-piece rectangular parallelepiped holder to a second end of the single-piece rectangular parallelepiped holder opposite the first end, wherein the first end of the single-piece rectangular parallelepiped holder corresponds to a first end of the cylindrically-shaped electrical storage elements and the second end of the single-piece rectangular parallelepiped holder corresponds to a second end of the cylindrically-shaped electrical storage elements,
wherein each of the two major outside surfaces include an equal number of the pl

Assignees

• Ninomiya Tooru
• Nishimoto Susumu
• Souda Akihiko
• Panasonic Corp
• Komatsu Mfg Co Ltd

Inventors

• Ninomiya Tooru
• Nishimoto Susumu
• Souda Akihiko

Classifications

• H01G11/10 Primary

  Multiple hybrid or EDL capacitors, e.g. arrays or modules (housings, cases, encapsulations or mountings thereof H01G11/78) · CPC title

• H01M10/643

  Cylindrical cells · CPC title

• H01G11/82

  Fixing or assembling a capacitive element in a housing, e.g. mounting electrodes, current collectors or terminals in containers or encapsulations · CPC title

• H01G9/08

  Housing; Encapsulation · CPC title

• H01M10/6555

  arranged between the cells · CPC title