Battery module

Patent metadata

Field	Value
Publication number	US-11038217-B2
Application number	US-201916432037-A
Country	US
Kind code	B2
Filing date	Jun 5, 2019
Priority date	Jun 22, 2018
Publication date	Jun 15, 2021
Grant date	Jun 15, 2021

Abstract

A battery module includes: a cell-stacked body constituted by stacking a plurality of cells; and a sensor device configured to detect a voltage of each cell. The sensor device is disposed on an upper portion of the cell-stacked body. The sensor device is provided with a sensor bulging portion which bulges downward, and the upper portion of the cell-stacked body is provided with a low-height portion accommodating the sensor bulging portion.

First claim

The invention claimed is:

1. A battery module comprising:
a cell-stacked body constituted by stacking a plurality of cells;
a sensor device configured to detect a voltage of each cell; and
a bus bar plate mounted on an upper surface of the cell-stacked body, wherein
the sensor device is disposed on an upper portion of the cell-stacked body,
the sensor device is provided with a plurality of sensor bulging portions which bulges downward,
the upper portion of the cell-stacked body is provided with a plurality of low-height portions provided on a single flat plate, each low-height portion being recessed downwards to accommodate a respective one of the sensor bulging portions, and
the low-height portions are constituted by the bus bar plate.

2. The battery module according to claim 1 , wherein
the sensor device includes:
a substrate;
electronic components mounted on the substrate; and
a case accommodating the substrate and the electronic component, and
the sensor bulging portions are provided on a lower surface of the case.

3. The battery module according to claim 2 , wherein
the electronic component is mounted on a lower surface of the substrate, and
the sensor bulging portions are electronic component accommodation portions which accommodate the electronic components.

4. The battery module according to claim 1 , wherein
the bus bar plate includes:
high-height portions which are terminal portions of voltage detection lines connected to bus bars and which extend upwards; and
the low-height portions are provided between the terminal portions.

5. The battery module according to claim 4 , wherein
the bus bar plate further includes a voltage detection line accommodation portion accommodating a plurality of the voltage detection lines at a position which does not overlap with the high-height portions.

6. The battery module according to claim 1 , wherein
the plurality of low-height portions are provided on a same plane that is parallel to the upper surface of the cell-stacked body.

7. The battery module according to claim 1 , wherein
each low-height portion is recessed downwards by a first depth amount to accommodate the respective one of the sensor bulging portions.

8. The battery module according to claim 4 , wherein
the high-height portions extend upwards by a first height amount.

Assignees

• Honda Motor Co Ltd

Inventors

• In Kazuhisa
• Itaya Hiroki
• Nakano Atsushi

Classifications

• H01M10/482 Primary

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/503

  characterised by the shape of the interconnectors · CPC title

• H01M50/209

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

• H01M50/569

  Constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals (battery terminal connectors with integrated measuring arrangements G01R31/364) · CPC title

• 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