Battery pack

Patent metadata

Field	Value
Publication number	US-9905823-B2
Application number	US-201515301173-A
Country	US
Kind code	B2
Filing date	Feb 27, 2015
Priority date	Apr 11, 2014
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A second battery module is stacked on a first battery module. A control device is mounted on a mounting plate of the first battery module. The control device is arranged between the first battery module and the second battery module. A control device of the first battery module is arranged between inner surfaces of first bolt insertion portions and inner surfaces of second bolt insertion portions of second battery holders.

First claim

What is claimed is:

1. A battery pack comprising:
a first battery module, which includes a plurality of first battery holders and a plurality of first battery cells, which are each held by one of the first battery holders and aligned along an alignment direction of the battery pack;
a second battery module, which includes a plurality of second battery holders and a plurality of second battery cells, which are each held by one of the second battery holders and aligned along the alignment direction; and
a battery controller; wherein
the second battery holders each include two rows of bolt insertion portions that project from a bottom wall of the respective second battery holder toward the first battery module,
the second battery module is stacked on the first battery module via the two rows of the bolt insertion portions,
the second battery cells are bound in the alignment direction with bolts inserted in the two rows of the bolt insertion portions, wherein the bolts are inserted in the two rows of the bolt insertion portions in the alignment direction,
the battery controller is provided between the first battery module and the second battery module, and
the battery controller is arranged within a space bounded by the two rows of the bolt insertion portions and the bottom walls of the second battery holders.

2. The battery pack according to claim 1 , wherein the battery controller is separated from the two rows of the bolt insertion portions.

3. The battery pack according to claim 1 , further comprising:
a harness, which is connected to the first battery cells, wherein
the harness is arranged between the two rows of the bolt insertion portions.

4. The battery pack according to claim 1 , wherein
the battery controller includes a first electronic component and a second electronic component,
at least part of the second electronic component is stacked on the first electronic component, and
the second electronic component is arranged between the two rows of the bolt insertion portions.

5. The battery pack according to claim 1 , wherein
the first and second battery holders each include an interior that defines an accommodation portion,
the first battery cells are each held within the accommodation portion of one of the first battery holders, and
the second battery cells are each held within the accommodation portion of one of the second battery holders.

Assignees

• Toyota Jidoshokki Kk

Inventors

• Maeda Kazuki
• Kato Takayuki
• Ueda Hiromi
• Morisaku Naoto

Classifications

• H01M10/425 Primary

  Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing (printed circuits H05K1/00) · CPC title

• H01M50/209

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

• H01M50/20

  Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders (structural combination of accumulators with charging apparatus H01M10/46) · CPC title

• H01M2/1077 Primary

  Electricity · mapped topic

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title