Electrical storage module

Patent metadata

Field	Value
Publication number	US-9627151-B2
Application number	US-201414776206-A
Country	US
Kind code	B2
Filing date	Feb 4, 2014
Priority date	Mar 15, 2013
Publication date	Apr 18, 2017
Grant date	Apr 18, 2017

Abstract

An electrical storage module in which a plurality of electricity storage elements are electrically connected by conductive member, includes: a voltage detection board having voltage detection conductor that detects terminal voltage of the electricity storage element; a first external threaded component that connects the voltage detection conductor of the voltage detection board to the conductive member; and a cover that covers the voltage detection board; wherein: the cover is made from an insulating material; the conductive member has a first internal threaded portion into which the first external threaded component is to be screwingly engaged; and the distance between the inside surface of the cover that faces a head portion of the first external threaded component and an upper surface of the head portion of the first external threaded component is shorter than the distance between an end portion of the first internal threaded portion towards the cover side and an end of shaft portion of the first external threaded component.

First claim

The invention claimed is:

1. An electrical storage module in which a plurality of electricity storage elements are electrically connected by a conductive member, comprising:
a voltage detection board having a voltage detection conductor that detects terminal voltage of the electricity storage elements;
a first external threaded component that connects the voltage detection conductor of the voltage detection board to the conductive member; and
a cover that covers the voltage detection board;
wherein:
the cover is made from an insulating material;
the conductive member has a first internal threaded portion into which the first external threaded component is to be screwingly engaged; and
the distance between the inside surface of the cover that faces a head portion of the first external threaded component and an upper surface of the head portion of the first external threaded component is shorter than the distance between an end portion of the first internal threaded portion towards the cover side and an end of shaft portion of the first external threaded component.

2. An electrical storage module according to claim 1 , wherein
a convex portion is provided upon the cover at a position that opposes the head portion of the first external threaded component, projecting towards the first external threaded component.

3. An electrical storage module according to claim 1 , further comprising:
a housing member that houses the plurality of electricity storage elements; and
a second external threaded component that attaches the voltage detection board to the housing member; and wherein:
the housing member is made from an insulating material, and has a second internal threaded portion into which the second external threaded component is to be screwingly engaged; and
the distance between an inside surface of the cover that faces a head portion of the second external threaded component and an upper surface of the head portion of the second external threaded component is shorter than the distance between an end portion of the second internal threaded portion towards the cover side and an end of shaft portion of the second external threaded component.

Assignees

• Hitachi Automotive Systems Ltd
• Nissan Motor

Inventors

• Sengoku Eisuke
• Maeshima Toshikazu
• Hoshi Hiroshi
• Kotaki Akira
• Kiyota Shigeyuki
• Tanaka Yoshiyuki
• Iguchi Toyoki
• Saitou Hiroaki
• Saeki Masayoshi

Classifications

• H01M10/48 Primary

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• H01M50/50

  Current conducting connections for cells or batteries · CPC title

• H01M50/503

  characterised by the shape of the interconnectors · 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

• Y02E60/10

  Energy storage using batteries · CPC title