Battery monitoring device

Patent metadata

Field	Value
Publication number	US-2018047968-A1
Application number	US-201715672809-A
Country	US
Kind code	A1
Filing date	Aug 9, 2017
Priority date	Aug 10, 2016
Publication date	Feb 15, 2018
Grant date	—

Abstract

A battery monitoring device includes a plurality of voltage detection line, each of which configured to be electrically connected to an electrode of a respective one of a plurality of unit batteries in a battery assembly, the battery assembly being constituted by the unit batteries, a plurality of electronic circuits, each of which configured to be connected to a respective one of the voltage detection lines and to detect a voltage of a corresponding one of the unit batteries, a plurality of voltage detection substrates configured to be mounted to the unit batteries respectively, wherein each of the voltage detection lines and each of the electronic circuits are mounted on a respective one of the voltage detection substrates, and a communication line that connects the plurality of voltage detection substrates and a battery control unit.

First claim

What is claimed is:

1 . A battery monitoring device, comprising:
a plurality of voltage detection line, each of which configured to be electrically connected to an electrode of a respective one of a plurality of unit batteries in a battery assembly, the battery assembly being constituted by the unit batteries; a plurality of electronic circuits, each of which configured to be connected to a respective one of the voltage detection lines and to detect a voltage of a corresponding one of the unit batteries; a plurality of voltage detection substrates configured to be mounted to the unit batteries respectively, wherein each of the voltage detection lines and each of the electronic circuits are mounted on a respective one of the voltage detection substrates; and a communication line that connects the plurality of voltage detection substrates and a battery control unit.

2 . The battery monitoring device according to claim 1 , further comprising:
a duct configured to be mounted to the battery assembly, wherein each of the voltage detection substrates has an opening, through which gas exhausted from a valve passes and is guided to the duct, and the valve being provided on each of the unit batteries so as to release the gas being generated at the inside of a corresponding one of the unit batteries to the outside; and wherein the duct has an integral structure with the plurality of voltage detection substrates.

3 . The battery monitoring device according to claim 1 , further comprising:
a plurality of battery monitoring modules, each of which includes a housing being integrally formed on the corresponding one of the voltage detection substrates, each of the battery monitoring modules being mounted to respective one of the unit batteries, wherein a pair of electrode insertion concave portions configured to cover a pair of the electrodes in corresponding one of the unit batteries is formed in the respective one of the housings of the battery monitoring modules; and wherein a spring terminal is contained in each of the pair of electrode insertion concave portions and configures to electrically connect the electrode and the voltage detection line in each of the pair of electrode insertion concave portions.

Assignees

• Yazaki Corp

Inventors

• Ota Takao
• Takamatsu Masahiro

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

• H01M50/519

  comprising printed circuit boards [PCB] · CPC title

• H01M50/51

  Connection only in series · CPC title

• H01M10/484

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