Circuit body and battery module

Patent metadata

Field	Value
Publication number	US-11128018-B2
Application number	US-201916506617-A
Country	US
Kind code	B2
Filing date	Jul 9, 2019
Priority date	Jul 13, 2018
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

A circuit body includes: a plurality of conductors, and first and second substrates, wherein the first and second substrates include a battery wiring portion which is routed along each row of an electrodes and one ends of the conductors are respectively connected to bus bars, and a connector connection portion where the other ends of the plurality of conductors are connected to a connector, and parts of the first substrate and the second substrate are overlapped in the connector connection portion, so an arrangement order of the other ends of the conductors corresponds to the potential order of the bus bars.

First claim

What is claimed is:

1. A circuit body which is assembled to a battery assembly by at least a first conductive member, a second conductive member, and a third conductive member, the battery assembly includes electrodes of a plurality of battery cells arranged in two rows, the first conductive member is connected to at least a first electrode of one row of the electrodes, the second conductive member is connected to at least one electrode of another row of the electrodes, and the third conductive member is connected to a second electrode of the one row of electrodes, the circuit body comprising:
a first conductor, a second conductor, a third conductor, a first substrate which has flexibility and is provided with the first conductor and the third conductor, and a second substrate that is separate from the first substrate, the second substrate has flexibility and is provided with the second conductor
the first substrate includes
a first battery wiring portion which is routed along the one row of the electrodes and where one end of each of the first conductor and the third conductor is connected to first and third conductive members of the plurality of conductive members, and
a first connector connection portion where other ends of the first conductor and the third conductor are connected to a connector,

the second substrate includes
a second battery wiring portion which is routed along the other row of the electrodes and where one end of the second conductor is connected to the second conductive member, and
a second connector connection portion where another end of the second conductor is connected to the connector,

a part of the second substrate is folded in the second connector connection portion and overlapped on the first substrate and the other end of the second conductor is arranged between the other ends of the first conductor and the third conductor, so an arrangement order of the other ends of the first and third conductors included in the first substrate and the second conductor included with the second substrate corresponds to the potential order of the first, second and third conductive members.

2. A battery module assembled to a battery assembly in which electrodes of a plurality of battery cells are arranged in two rows, comprising:
a circuit body including a first conductor, a second conductor, a third conductor, and a substrate;
a first conductive member connected to one end of the first conductor, a second conductive member connected to one end of the second conductor, a third conductive member connected to one end of the third conductor; and
a connector connected to another end of each of the first conductor, the second conductor, and the third conductor, wherein
the first conductive member is connected to a first electrode of one row of the electrodes, the second conductive member is connected to at least one electrode of another row of the electrodes, the third conductive member is connected to a second electrode of the one row of the electrodes,
the substrate has flexibility and is provided with the first, second, and third conductors, and the substrate includes
a base portion which is routed along each row of the electrodes and where the one ends of the first, second, and third conductors are respectively connected to the first, second, and third conductive members, and
a folded portion that is folded with respect to the base portion, the second conductor extends from the base portion onto the folded portion, and the folded portion is provided with the other end of the second conductor, and

the folded portion is overlapped on the base portion and the other end of the second conductor is arranged between the other ends of the first and third conductors, so an arrangement order of the other ends of the first, second, and third conductors corresponds to the potential order of the first, second, and third conductive members.

Assignees

• Yazaki Corp

Inventors

• Makino Kimitoshi

Classifications

• H05K1/118 Primary

  specially for flexible printed circuits, e.g. using folded portions · CPC title

• H01M10/482

  for several batteries or cells simultaneously or sequentially · CPC title

• H01M50/50

  Current conducting connections for cells or batteries · CPC title

• H01M50/298

  characterised by the wiring of battery packs · CPC title

• H01M50/284

  with incorporated circuit boards, e.g. printed circuit boards [PCB] · CPC title