Battery, assembled battery, and mounting device

Patent metadata

Field	Value
Publication number	US-9722219-B2
Application number	US-201114241260-A
Country	US
Kind code	B2
Filing date	Aug 30, 2011
Priority date	Aug 30, 2011
Publication date	Aug 1, 2017
Grant date	Aug 1, 2017

Abstract

A battery includes a bottomed case of box shape housing a power-generating element, a lid component for the case, a terminal electrode provided outside the case and extending in the direction of the thickness of the lid component, a take-out electrode passing through the lid component, provided for taking out an electric power of the power-generating element to the outside of the case, and disposed at a position different from that of the terminal electrode within a plane including the lid component, and a connecting member connecting the terminal electrode and the take-out electrode and including a thinner portion allowing bending of the connecting member in response to an external force applied to the terminal electrode in the direction of the thickness of the lid component.

First claim

The invention claimed is:

1. A battery comprising:
a bottomed case of box shape housing a power-generating element;
a lid component for the case;
a terminal electrode provided outside the case and extending in a direction of a thickness of the lid component;
a take-out electrode passing through the lid component, provided for taking out an electric power of the power-generating element to the outside of the case, and disposed at a position different from that of the terminal electrode within a plane including the lid component; and
a connecting member connecting the terminal electrode and the take-out electrode and including a recessed portion allowing bending of the connecting member in response to an external force applied to the terminal electrode in the direction of the thickness of the lid component,
wherein the connecting member is formed in a stepped shape having a first flat plate portion connected to the terminal electrode and a second flat plate portion positioned at a height different from that of the first flat plate portion and connected to the take-out electrode, and the recessed portion is formed in the second flat plate portion,
wherein the second flat plate portion includes a hole portion through which the take-out electrode passes, and the recessed portion is formed on a surface of the second flat plate portion at a position different from the hole portion of the second flat plate portion,
wherein the battery further comprises an insulator sandwiched between the second flat plate portion and the lid component,
wherein the insulator has a protruding portion that is inserted into the recessed portion,
wherein the recessed portion is provided on a flat surface of the second flat plate portion that is in contact with the insulator, and
wherein a clearance is provided between the recessed portion and the protruding portion.

2. The battery according to claim 1 , wherein the connecting member has an inclined flat plate portion connecting the first flat plate portion and the second flat plate portion, and
the recessed portion is formed in a portion of the second flat plate portion, the portion bordering on the inclined flat plate portion.

3. The battery according to claim 1 , wherein the terminal electrode is inserted into a bus bar, and
a nut for fixing the bus bar is fastened to an outer face of the terminal electrode.

4. The battery according to claim 1 , further comprising:
a negative electrode terminal electrode made of copper; and
a positive electrode terminal electrode made of aluminum,
wherein the recessed portion is formed only in the positive electrode terminal electrode out of the positive electrode terminal electrode and the negative electrode terminal electrode.

5. An assembled battery provided by connecting a plurality of the batteries according to claim 1 .

6. The assembled battery according to claim 5 , wherein the assembled battery is a power source supplying a driving electric power for a motor used to run a vehicle.

7. The assembled battery according to claim 5 , wherein the assembled battery is a power source for driving an electrically powered tool.

8. A mounting device having the assembled battery according to claim 5 mounted thereon.

Assignees

• Harayama Takashi
• Toyota Motor Co Ltd

Inventors

• Harayama Takashi

Classifications

• H01M50/209 Primary

  adapted for prismatic or rectangular cells (H01M50/216 takes precedence) · CPC title

• H01M50/176

  for prismatic or rectangular cells (H01M50/181 takes precedence) · CPC title

• H01M50/562

  characterised by the material · CPC title

• H01M50/103 Primary

  prismatic or rectangular (H01M50/109, H01M50/11 take precedence) · CPC title

• H01M50/553

  Terminals adapted for prismatic, pouch or rectangular cells · CPC title