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Sealed battery pack

Imported: 25 Feb '17 | Published: 01 Jul '03

Shinsuke Fukuda, Yoshiaki Ogata, Mitsugu Takaki, Yasunori Uchida, Joji Kasugai

USPTO - Utility Patents

Abstract

In a sealed battery pack comprising a plurality of serially disposed cells in which power generating elements are housed in prismatic cell cases and the openings thereof are sealed, the plurality of serially disposed cells are housed in a cooling box, and the top openings in the cooling box and the openings in the various cell cases of the cells are sealed by integrating lids. Coolant passages on both sides between the side surfaces of the cells and the side walls on both sides of the cooling box in the cell arrangement direction, and coolant passages between the cases of the cells are formed so as to communicate with each other, so that all of the side surfaces of the cells are forcibly cooled by a coolant.

Description

While novel features of the invention are set forth in the preceding, the invention, both as to organization and content, can be further understood and appreciated, along with other objects and features thereof, from the following detailed description and examples when taken in conjunction with the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exterior oblique view of an embodiment of the sealed battery pack of the present invention;

FIG. 2 is an exploded oblique view of the same embodiment;

FIG. 3 is an exploded oblique view of the main components in the same embodiment;

FIG. 4 is a vertical cross section of the same embodiment;

FIG. 5 is a detail vertical cross section of the same embodiment;

FIG. 6 is a detail oblique view of the middle lid in the same embodiment;

FIG. 7 is an oblique view of the electrical connector in the same embodiment;

FIG. 8 is an oblique view of the outer lid in the same embodiment;

FIG. 9 consists of vertical cross sections illustrating various examples of the structure inside the coolant passages on both sides in the same embodiment;

FIG. 10 is an exploded oblique view illustrating the main structure of another embodiment of the sealed battery pack of the present invention;

FIG. 11 illustrates the cooling box in the same embodiment, with FIG. 11A being a detail plan view and FIG. 11B a vertical cross section from the front;

FIG. 12 is a cross section along the XII—XII line in FIG. 11B;

FIG. 13 is a cross section along the XIII—XIII line in FIG. 11B;

FIG. 14 is a front view of a case in the same embodiment;

FIG. 15 illustrates the flow of the coolant in the same embodiment, with FIG. 15A being a diagram of the flow seen from the front, and FIG. 15B a diagram of the flow [in a cross section] along the XVB—XVB line in FIG. 15A; and

FIG. 16 is a front view of a conventional sealed battery pack.

Claims

1. A sealed battery pack wherein a plurality of cells each accommodating therein elements for electromotive force are housed in prismatic cell cases, of which openings are sealed, comprising:

2. A sealed battery pack wherein a plurality of cells each accommodating therein elements for electromotive force are housed in prismatic cell cases, of which openings are sealed, comprising:

3. The sealed battery pack according to claim 2, wherein the partitions on both inner walls of the cooling box are formed with cut-outs in the shape of steps, and the latching members are formed protruding upward from cut-out corners of the partitions.