Battery module and battery pack

Patent metadata

Field	Value
Publication number	US-2018076429-A1
Application number	US-201715701852-A
Country	US
Kind code	A1
Filing date	Sep 12, 2017
Priority date	Sep 13, 2016
Publication date	Mar 15, 2018
Grant date	—

Abstract

A battery module includes a plurality of battery cells each of which includes two electrodes and which are arranged such that two electrode groups formed of the electrodes arranged in a row are formed and are electrically connected in series or in parallel by physically and electrically connecting an electrical connection member to each of the two adjacent electrodes in the electrode group; a separator disposed at least between the adjacent battery cells to achieve insulation of the battery cells; and a restraint band holding a state in which the battery cell and the separator are alternately stacked. The separator includes a lid covering the electrical connection member connected to the electrode and the electrode as a connection target of the electrical connection member from a side opposite to the battery cell.

First claim

What is claimed is:

1 . A battery module comprising:
a plurality of battery cells each of which includes two electrodes and which are arranged such that two electrode groups formed of the electrodes arranged in a row are formed and are electrically connected in series or in parallel by physically and electrically connecting an electrical connection member to each of the two adjacent electrodes in the electrode group; a separator that is disposed at least between the adjacent battery cells to achieve insulation of the battery cells; and a holding member that holds a state in which the battery cell and the separator are alternately stacked, wherein the separator includes a lid that covers the electrical connection member connected to the electrode and the electrode serving as a connection target of the electrical connection member from a side opposite to the battery cell.

2 . The battery module according to claim 1 , wherein
the separator is linked to the lid by a linking portion having flexibility, and the lid is displaced between an open position before covering the electrical connection member connected to the electrode and a closed position of covering the electrical connection member connected to the electrode, using the flexibility of the linking portion.

3 . The battery module according to claim 1 , wherein
the separator includes a holding portion that holds the electrical connection member.

4 . The battery module according to claim 2 , wherein
the separator includes a holding portion that holds the electrical connection member.

5 . The battery module according to claim 1 , wherein
the separator includes a guide wall of a battery state detector that guides components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, along a wiring path, detects state information of the battery cell, and sends the state information to the arithmetic processing device.

6 . The battery module according to claim 2 , wherein
the separator includes a guide wall of a battery state detector that guides components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, along a wiring path, detects state information of the battery cell, and sends the state information to the arithmetic processing device.

7 . The battery module according to claim 3 , wherein
the separator includes a guide wall of a battery state detector that guides components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, along a wiring path, detects state information of the battery cell, and sends the state information to the arithmetic processing device.

8 . The battery module according to claim 4 , wherein
the separator includes a guide wall of a battery state detector that guides components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, along a wiring path, detects state information of the battery cell, and sends the state information to the arithmetic processing device.

9 . The battery module according to claim 1 , wherein
the separator includes a holding structure of a battery state detector that holds components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, and detects state information of the battery cell and sends the state information to the arithmetic processing device.

10 . The battery module according to claim 2 , wherein
the separator includes a holding structure of a battery state detector that holds components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, and detects state information of the battery cell and sends the state information to the arithmetic processing device.

11 . The battery module according to claim 3 , wherein
the separator includes a holding structure of a battery state detector that holds components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, and detects state information of the battery cell and sends the state information to the arithmetic processing device.

12 . The battery module according to claim 4 , wherein
the separator includes a holding structure of a battery state detector that holds components of a battery monitoring unit that is electrically connected to an arithmetic processing device of the battery monitoring unit, and detects state information of the battery cell and sends the state information to the arithmetic processing device.

13 . A battery pack comprising:
a plurality of battery cells each of which includes two electrodes and which are arranged such that two electrode groups formed of the electrodes arranged in a row are formed; an electrical connection member that causes the plurality of battery cells to be electrically connected in series or in parallel by being physically and electrically connected to each of the two adjacent electrodes in the electrode group; a separator that is disposed at least between the adjacent battery cells to achieve insulation of the battery cells; and a holding member that holds a state in which the battery cell and the separator are alternately stacked, wherein the separator includes a lid that covers the electrical connection member connected to the electrode from a side opposite to the battery cell.

Assignees

• Yazaki Corp

Inventors

• Shoji Takao
• Yanagihara Shinichi

Classifications

• H01M10/482 Primary

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M2220/20

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

• H01M50/291

  characterised by their shape · CPC title

• H01M10/484

  for measuring electrolyte level, electrolyte density or electrolyte conductivity · CPC title

• H01M50/522

  Inorganic material · CPC title