Battery module

• US 9,905,828 B2
• Filed: 03/07/2014
• Issued: 02/27/2018
• Est. Priority Date: 03/08/2013
• Status: Active Grant

• Current Assignee: Kabushiki Kaisha Toyota Jidoshokki (Toyota Motor Corporation)
• Original Assignee: Kabushiki Kaisha Toyota Jidoshokki (Toyota Motor Corporation)
• Inventors: Sakai, Takashi, Kato, Takayuki, Watanabe, Shintaro, Oishi, Hidefumi, Ueda, Hiromi, Morisaku, Naoto, Maeda, Kazuki
• Primary Examiner(s): Smith, Jeremiah R
• Application Number:
  US14/772,212
• Publication Number:
  US 20160064716A1
• Time in Patent Office: 1,453 Days
• Field of Search: None
• CPC Class Codes: H01M 10/0468 Compression means for stacks of electrodes and separators
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/30 Nickel accumulators H01M10/34 takes precedence
• CPC Class Codes: H01M 50/209 adapted for prismatic or rectangular cells H01M50/216 takes precedence
• CPC Class Codes: H01M 50/50 Current conducting connections for cells or batteries
• CPC Class Codes: H01M 50/503 characterised by the shape of the interconnectors
• CPC Class Codes: H01M 50/553 Terminals adapted for prismatic, pouch or rectangular cells
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product

Abstract

This battery module is provided with: a cell having a connection terminal; and a bus bar that is connected to the connection terminal and has an upright standing part that extends in the direction in which the connection terminal protrudes. The bus bar is connected, via a conductive wire, to an object to be connected, which is provided at a position separate from the connection terminal in the extending direction of the upright standing part. The cell is configured so as to be charged and discharged through the bus bar and the conductive wire.

Claims

1. A battery module comprising:

a battery cell including a connection terminal; and

a bus bar connected to the connection terminal, wherein the bus bar includes an upright portion extending in a direction in which the connection terminal projects, wherein;

the bus bar is connected by a wire to a connected body that is arranged at a location separated from the connection terminal in an extension direction of the upright portion; and

the battery cell is configured to be charged and discharged through the bus bar and the wire,

the bus bar further including an extension that is connected to the upright portion and extends in a direction intersecting the extension direction of the upright portion,

the extension includes a basal end and a distal end, which is arranged at an opposite side of the basal end in an extension direction of the extension, wherein the basal end is connected to the upright portion and the distal end is joined with the wire, and

wherein the extension is defined by a hollow cylindrical portion.

2. The battery module according to claim 1, wherein:

the connected body is arranged on a plate member; and

the upright portion is inserted through a through hole of the plate member, and wherein

the extension is positioned vertically above the plate member.

3. The battery module according to claim 1, wherein:

the extension includes a surface configured to extend in the extension direction of the upright portion and be connected to the wire.

4. A battery module comprising:

a plurality of battery cells arranged in a layout direction to form a battery cell row, wherein each battery cell includes a connection terminal;

end plates arranged at two ends of the battery cell row in the layout direction;

a bus bar connected to the connection terminal of a first battery cell located at one end of the battery cell row, wherein the bus bar includes an upright portion extending in a direction in which the connection terminal projects and an extension that is connected to the upright portion, the extension extending outside an outer surface of the end plate adjacent to the first battery cell in a direction intersecting an extension direction of the upright portion, wherein;

the extension includes a basal end and a distal end, which is arranged at an opposite side of the basal end in an extension direction of the extension, wherein the basal end is connected to the upright portion, and the distal end is connected by a wire to a connected body that is arranged at a location separated from the connection terminal of the first battery cell in the extension direction of the upright portion;

a plate member is arranged above the battery cells and includes a through hole opposite to the connection terminal of the first battery cell;

the upright portion is inserted through the through hole;

the battery cells are configured to be charged and discharged through the bus bar and the wire; and

wherein the extension is positioned vertically above the plate member.

5. The battery module according to claim 4, wherein the extension includes a surface configured to extend in the extension direction of the upright portion and be connected to the wire.